diff --git a/agent/build.gradle b/agent/build.gradle
index 08ed152..43ddfbd 100644
--- a/agent/build.gradle
+++ b/agent/build.gradle
@@ -6,7 +6,7 @@ plugins {
     id 'signing'
 
     // https://github.com/johnrengelman/shadow
-    id "com.github.johnrengelman.shadow" version "7.0.0"
+    id 'com.github.johnrengelman.shadow' version '7.0.0'
 }
 
 sourceCompatibility = JavaVersion.VERSION_1_8
@@ -21,7 +21,7 @@ dependencies {
     api project(":async-profiler-context")
     implementation('com.squareup.okhttp3:okhttp:4.12.0')
     implementation("com.squareup.moshi:moshi:1.14.0")
-    api 'com.google.protobuf:protobuf-java:4.28.1'
+    api 'com.google.protobuf:protobuf-java:4.29.2'
     testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api', version: '5.7.2'
     testRuntimeOnly group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: '5.7.2'
     testImplementation group: 'org.mockito', name: 'mockito-core', version: '3.10.0'
diff --git a/agent/src/main/java/io/pyroscope/javaagent/Snapshot.java b/agent/src/main/java/io/pyroscope/javaagent/Snapshot.java
index b7e0c91..200be25 100644
--- a/agent/src/main/java/io/pyroscope/javaagent/Snapshot.java
+++ b/agent/src/main/java/io/pyroscope/javaagent/Snapshot.java
@@ -11,9 +11,9 @@ public final class Snapshot {
     public final Instant started;
     public final Instant ended;
     public final byte[] data;
-    public final JfrLabels.Snapshot labels;
+    public final JfrLabels.LabelsSnapshot labels;
 
-    Snapshot(Format format, final EventType eventType, final Instant started, final Instant ended,final byte[] data, JfrLabels.Snapshot labels) {
+    Snapshot(Format format, final EventType eventType, final Instant started, final Instant ended,final byte[] data, JfrLabels.LabelsSnapshot labels) {
         this.format = format;
         this.eventType = eventType;
         this.started = started;
diff --git a/async-profiler-context/build.gradle b/async-profiler-context/build.gradle
index f92f8d6..595442b 100644
--- a/async-profiler-context/build.gradle
+++ b/async-profiler-context/build.gradle
@@ -25,7 +25,7 @@ def asyncProfilerVersion = project.properties['async_profiler_version']
 def pyroscopeVersion = project.properties['pyroscope_version']
 dependencies {
     api files("$buildDir/async-profiler/async-profiler.jar")
-    implementation 'com.google.protobuf:protobuf-java:3.21.1'
+    implementation 'com.google.protobuf:protobuf-java:4.29.2'
     testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api', version: '5.7.2'
     testRuntimeOnly group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: '5.7.2'
     testImplementation group: 'org.mockito', name: 'mockito-core', version: '3.10.0'
@@ -201,3 +201,14 @@ afterEvaluate {
         }
     }
 }
+
+tasks.register('generate-proto-classes') {
+    doLast {
+        exec {
+            commandLine 'protoc',
+                '-I', '.',
+                '--java_out', 'src/main/java',
+                'jfr_labels.proto'
+        }
+    }
+}
diff --git a/async-profiler-context/src/main/jfr_labels.proto b/async-profiler-context/jfr_labels.proto
similarity index 100%
rename from async-profiler-context/src/main/jfr_labels.proto
rename to async-profiler-context/jfr_labels.proto
diff --git a/async-profiler-context/src/main/java/io/pyroscope/labels/Pyroscope.java b/async-profiler-context/src/main/java/io/pyroscope/labels/Pyroscope.java
index 141a665..3082c6a 100644
--- a/async-profiler-context/src/main/java/io/pyroscope/labels/Pyroscope.java
+++ b/async-profiler-context/src/main/java/io/pyroscope/labels/Pyroscope.java
@@ -28,8 +28,8 @@ public static void run(LabelsSet labels, Runnable c) {
             }
         }
 
-        public static JfrLabels.Snapshot dump() {
-            JfrLabels.Snapshot.Builder sb = JfrLabels.Snapshot.newBuilder();
+        public static JfrLabels.LabelsSnapshot dump() {
+            JfrLabels.LabelsSnapshot.Builder sb = JfrLabels.LabelsSnapshot.newBuilder();
 
             for (Ref<String> it : RefCounted.strings.valueToRef.values()) {
                 sb.putStrings(it.id, it.val);
diff --git a/async-profiler-context/src/main/java/io/pyroscope/labels/pb/JfrLabels.java b/async-profiler-context/src/main/java/io/pyroscope/labels/pb/JfrLabels.java
index 6e9156b..d1044e6 100644
--- a/async-profiler-context/src/main/java/io/pyroscope/labels/pb/JfrLabels.java
+++ b/async-profiler-context/src/main/java/io/pyroscope/labels/pb/JfrLabels.java
@@ -1,10 +1,20 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
 // source: jfr_labels.proto
+// Protobuf Java Version: 4.26.1
 
 package io.pyroscope.labels.pb;
 
 public final class JfrLabels {
   private JfrLabels() {}
+  static {
+    com.google.protobuf.RuntimeVersion.validateProtobufGencodeVersion(
+      com.google.protobuf.RuntimeVersion.RuntimeDomain.PUBLIC,
+      /* major= */ 4,
+      /* minor= */ 26,
+      /* patch= */ 1,
+      /* suffix= */ "",
+      JfrLabels.class.getName());
+  }
   public static void registerAllExtensions(
       com.google.protobuf.ExtensionRegistryLite registry) {
   }
@@ -41,14 +51,12 @@ boolean containsLabels(
     /**
      * <code>map&lt;int64, int64&gt; labels = 1;</code>
      */
-
     long getLabelsOrDefault(
         long key,
         long defaultValue);
     /**
      * <code>map&lt;int64, int64&gt; labels = 1;</code>
      */
-
     long getLabelsOrThrow(
         long key);
   }
@@ -56,80 +64,26 @@ long getLabelsOrThrow(
    * Protobuf type {@code io.pyroscope.labels.pb.Context}
    */
   public static final class Context extends
-      com.google.protobuf.GeneratedMessageV3 implements
+      com.google.protobuf.GeneratedMessage implements
       // @@protoc_insertion_point(message_implements:io.pyroscope.labels.pb.Context)
       ContextOrBuilder {
   private static final long serialVersionUID = 0L;
+    static {
+      com.google.protobuf.RuntimeVersion.validateProtobufGencodeVersion(
+        com.google.protobuf.RuntimeVersion.RuntimeDomain.PUBLIC,
+        /* major= */ 4,
+        /* minor= */ 26,
+        /* patch= */ 1,
+        /* suffix= */ "",
+        Context.class.getName());
+    }
     // Use Context.newBuilder() to construct.
-    private Context(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    private Context(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
       super(builder);
     }
     private Context() {
     }
 
-    @java.lang.Override
-    @SuppressWarnings({"unused"})
-    protected java.lang.Object newInstance(
-        UnusedPrivateParameter unused) {
-      return new Context();
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private Context(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      if (extensionRegistry == null) {
-        throw new java.lang.NullPointerException();
-      }
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            case 10: {
-              if (!((mutable_bitField0_ & 0x00000001) != 0)) {
-                labels_ = com.google.protobuf.MapField.newMapField(
-                    LabelsDefaultEntryHolder.defaultEntry);
-                mutable_bitField0_ |= 0x00000001;
-              }
-              com.google.protobuf.MapEntry<java.lang.Long, java.lang.Long>
-              labels__ = input.readMessage(
-                  LabelsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
-              labels_.getMutableMap().put(
-                  labels__.getKey(), labels__.getValue());
-              break;
-            }
-            default: {
-              if (!parseUnknownField(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
       return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_Context_descriptor;
@@ -137,7 +91,7 @@ private Context(
 
     @SuppressWarnings({"rawtypes"})
     @java.lang.Override
-    protected com.google.protobuf.MapField internalGetMapField(
+    protected com.google.protobuf.MapFieldReflectionAccessor internalGetMapFieldReflection(
         int number) {
       switch (number) {
         case 1:
@@ -148,7 +102,7 @@ protected com.google.protobuf.MapField internalGetMapField(
       }
     }
     @java.lang.Override
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
         internalGetFieldAccessorTable() {
       return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_Context_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
@@ -167,6 +121,7 @@ private static final class LabelsDefaultEntryHolder {
                   com.google.protobuf.WireFormat.FieldType.INT64,
                   0L);
     }
+    @SuppressWarnings("serial")
     private com.google.protobuf.MapField<
         java.lang.Long, java.lang.Long> labels_;
     private com.google.protobuf.MapField<java.lang.Long, java.lang.Long>
@@ -177,18 +132,16 @@ private static final class LabelsDefaultEntryHolder {
       }
       return labels_;
     }
-
     public int getLabelsCount() {
       return internalGetLabels().getMap().size();
     }
     /**
      * <code>map&lt;int64, int64&gt; labels = 1;</code>
      */
-
     @java.lang.Override
     public boolean containsLabels(
         long key) {
-      
+
       return internalGetLabels().getMap().containsKey(key);
     }
     /**
@@ -203,7 +156,6 @@ public java.util.Map<java.lang.Long, java.lang.Long> getLabels() {
      * <code>map&lt;int64, int64&gt; labels = 1;</code>
      */
     @java.lang.Override
-
     public java.util.Map<java.lang.Long, java.lang.Long> getLabelsMap() {
       return internalGetLabels().getMap();
     }
@@ -211,11 +163,10 @@ public java.util.Map<java.lang.Long, java.lang.Long> getLabelsMap() {
      * <code>map&lt;int64, int64&gt; labels = 1;</code>
      */
     @java.lang.Override
-
     public long getLabelsOrDefault(
         long key,
         long defaultValue) {
-      
+
       java.util.Map<java.lang.Long, java.lang.Long> map =
           internalGetLabels().getMap();
       return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -224,10 +175,9 @@ public long getLabelsOrDefault(
      * <code>map&lt;int64, int64&gt; labels = 1;</code>
      */
     @java.lang.Override
-
     public long getLabelsOrThrow(
         long key) {
-      
+
       java.util.Map<java.lang.Long, java.lang.Long> map =
           internalGetLabels().getMap();
       if (!map.containsKey(key)) {
@@ -250,13 +200,13 @@ public final boolean isInitialized() {
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      com.google.protobuf.GeneratedMessageV3
+      com.google.protobuf.GeneratedMessage
         .serializeLongMapTo(
           output,
           internalGetLabels(),
           LabelsDefaultEntryHolder.defaultEntry,
           1);
-      unknownFields.writeTo(output);
+      getUnknownFields().writeTo(output);
     }
 
     @java.lang.Override
@@ -275,7 +225,7 @@ public int getSerializedSize() {
         size += com.google.protobuf.CodedOutputStream
             .computeMessageSize(1, labels__);
       }
-      size += unknownFields.getSerializedSize();
+      size += getUnknownFields().getSerializedSize();
       memoizedSize = size;
       return size;
     }
@@ -292,7 +242,7 @@ public boolean equals(final java.lang.Object obj) {
 
       if (!internalGetLabels().equals(
           other.internalGetLabels())) return false;
-      if (!unknownFields.equals(other.unknownFields)) return false;
+      if (!getUnknownFields().equals(other.getUnknownFields())) return false;
       return true;
     }
 
@@ -307,7 +257,7 @@ public int hashCode() {
         hash = (37 * hash) + LABELS_FIELD_NUMBER;
         hash = (53 * hash) + internalGetLabels().hashCode();
       }
-      hash = (29 * hash) + unknownFields.hashCode();
+      hash = (29 * hash) + getUnknownFields().hashCode();
       memoizedHashCode = hash;
       return hash;
     }
@@ -346,39 +296,41 @@ public static io.pyroscope.labels.pb.JfrLabels.Context parseFrom(
     }
     public static io.pyroscope.labels.pb.JfrLabels.Context parseFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseWithIOException(PARSER, input);
     }
     public static io.pyroscope.labels.pb.JfrLabels.Context parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseWithIOException(PARSER, input, extensionRegistry);
     }
+
     public static io.pyroscope.labels.pb.JfrLabels.Context parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseDelimitedWithIOException(PARSER, input);
     }
+
     public static io.pyroscope.labels.pb.JfrLabels.Context parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
     public static io.pyroscope.labels.pb.JfrLabels.Context parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseWithIOException(PARSER, input);
     }
     public static io.pyroscope.labels.pb.JfrLabels.Context parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseWithIOException(PARSER, input, extensionRegistry);
     }
 
@@ -398,7 +350,7 @@ public Builder toBuilder() {
 
     @java.lang.Override
     protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
       Builder builder = new Builder(parent);
       return builder;
     }
@@ -406,7 +358,7 @@ protected Builder newBuilderForType(
      * Protobuf type {@code io.pyroscope.labels.pb.Context}
      */
     public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
         // @@protoc_insertion_point(builder_implements:io.pyroscope.labels.pb.Context)
         io.pyroscope.labels.pb.JfrLabels.ContextOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
@@ -415,7 +367,7 @@ public static final class Builder extends
       }
 
       @SuppressWarnings({"rawtypes"})
-      protected com.google.protobuf.MapField internalGetMapField(
+      protected com.google.protobuf.MapFieldReflectionAccessor internalGetMapFieldReflection(
           int number) {
         switch (number) {
           case 1:
@@ -426,7 +378,7 @@ protected com.google.protobuf.MapField internalGetMapField(
         }
       }
       @SuppressWarnings({"rawtypes"})
-      protected com.google.protobuf.MapField internalGetMutableMapField(
+      protected com.google.protobuf.MapFieldReflectionAccessor internalGetMutableMapFieldReflection(
           int number) {
         switch (number) {
           case 1:
@@ -437,7 +389,7 @@ protected com.google.protobuf.MapField internalGetMutableMapField(
         }
       }
       @java.lang.Override
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
           internalGetFieldAccessorTable() {
         return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_Context_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
@@ -446,22 +398,18 @@ protected com.google.protobuf.MapField internalGetMutableMapField(
 
       // Construct using io.pyroscope.labels.pb.JfrLabels.Context.newBuilder()
       private Builder() {
-        maybeForceBuilderInitialization();
+
       }
 
       private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
         super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
+
       }
       @java.lang.Override
       public Builder clear() {
         super.clear();
+        bitField0_ = 0;
         internalGetMutableLabels().clear();
         return this;
       }
@@ -489,45 +437,19 @@ public io.pyroscope.labels.pb.JfrLabels.Context build() {
       @java.lang.Override
       public io.pyroscope.labels.pb.JfrLabels.Context buildPartial() {
         io.pyroscope.labels.pb.JfrLabels.Context result = new io.pyroscope.labels.pb.JfrLabels.Context(this);
-        int from_bitField0_ = bitField0_;
-        result.labels_ = internalGetLabels();
-        result.labels_.makeImmutable();
+        if (bitField0_ != 0) { buildPartial0(result); }
         onBuilt();
         return result;
       }
 
-      @java.lang.Override
-      public Builder clone() {
-        return super.clone();
-      }
-      @java.lang.Override
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return super.setField(field, value);
-      }
-      @java.lang.Override
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return super.clearField(field);
-      }
-      @java.lang.Override
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return super.clearOneof(oneof);
-      }
-      @java.lang.Override
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return super.setRepeatedField(field, index, value);
-      }
-      @java.lang.Override
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return super.addRepeatedField(field, value);
+      private void buildPartial0(io.pyroscope.labels.pb.JfrLabels.Context result) {
+        int from_bitField0_ = bitField0_;
+        if (((from_bitField0_ & 0x00000001) != 0)) {
+          result.labels_ = internalGetLabels();
+          result.labels_.makeImmutable();
+        }
       }
+
       @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
         if (other instanceof io.pyroscope.labels.pb.JfrLabels.Context) {
@@ -542,7 +464,8 @@ public Builder mergeFrom(io.pyroscope.labels.pb.JfrLabels.Context other) {
         if (other == io.pyroscope.labels.pb.JfrLabels.Context.getDefaultInstance()) return this;
         internalGetMutableLabels().mergeFrom(
             other.internalGetLabels());
-        this.mergeUnknownFields(other.unknownFields);
+        bitField0_ |= 0x00000001;
+        this.mergeUnknownFields(other.getUnknownFields());
         onChanged();
         return this;
       }
@@ -557,17 +480,39 @@ public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        io.pyroscope.labels.pb.JfrLabels.Context parsedMessage = null;
+        if (extensionRegistry == null) {
+          throw new java.lang.NullPointerException();
+        }
         try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+          boolean done = false;
+          while (!done) {
+            int tag = input.readTag();
+            switch (tag) {
+              case 0:
+                done = true;
+                break;
+              case 10: {
+                com.google.protobuf.MapEntry<java.lang.Long, java.lang.Long>
+                labels__ = input.readMessage(
+                    LabelsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
+                internalGetMutableLabels().getMutableMap().put(
+                    labels__.getKey(), labels__.getValue());
+                bitField0_ |= 0x00000001;
+                break;
+              } // case 10
+              default: {
+                if (!super.parseUnknownField(input, extensionRegistry, tag)) {
+                  done = true; // was an endgroup tag
+                }
+                break;
+              } // default:
+            } // switch (tag)
+          } // while (!done)
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (io.pyroscope.labels.pb.JfrLabels.Context) e.getUnfinishedMessage();
           throw e.unwrapIOException();
         } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
+          onChanged();
+        } // finally
         return this;
       }
       private int bitField0_;
@@ -575,7 +520,7 @@ public Builder mergeFrom(
       private com.google.protobuf.MapField<
           java.lang.Long, java.lang.Long> labels_;
       private com.google.protobuf.MapField<java.lang.Long, java.lang.Long>
-      internalGetLabels() {
+          internalGetLabels() {
         if (labels_ == null) {
           return com.google.protobuf.MapField.emptyMapField(
               LabelsDefaultEntryHolder.defaultEntry);
@@ -583,8 +528,7 @@ public Builder mergeFrom(
         return labels_;
       }
       private com.google.protobuf.MapField<java.lang.Long, java.lang.Long>
-      internalGetMutableLabels() {
-        onChanged();;
+          internalGetMutableLabels() {
         if (labels_ == null) {
           labels_ = com.google.protobuf.MapField.newMapField(
               LabelsDefaultEntryHolder.defaultEntry);
@@ -592,20 +536,20 @@ public Builder mergeFrom(
         if (!labels_.isMutable()) {
           labels_ = labels_.copy();
         }
+        bitField0_ |= 0x00000001;
+        onChanged();
         return labels_;
       }
-
       public int getLabelsCount() {
         return internalGetLabels().getMap().size();
       }
       /**
        * <code>map&lt;int64, int64&gt; labels = 1;</code>
        */
-
       @java.lang.Override
       public boolean containsLabels(
           long key) {
-        
+
         return internalGetLabels().getMap().containsKey(key);
       }
       /**
@@ -620,7 +564,6 @@ public java.util.Map<java.lang.Long, java.lang.Long> getLabels() {
        * <code>map&lt;int64, int64&gt; labels = 1;</code>
        */
       @java.lang.Override
-
       public java.util.Map<java.lang.Long, java.lang.Long> getLabelsMap() {
         return internalGetLabels().getMap();
       }
@@ -628,11 +571,10 @@ public java.util.Map<java.lang.Long, java.lang.Long> getLabelsMap() {
        * <code>map&lt;int64, int64&gt; labels = 1;</code>
        */
       @java.lang.Override
-
       public long getLabelsOrDefault(
           long key,
           long defaultValue) {
-        
+
         java.util.Map<java.lang.Long, java.lang.Long> map =
             internalGetLabels().getMap();
         return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -641,10 +583,9 @@ public long getLabelsOrDefault(
        * <code>map&lt;int64, int64&gt; labels = 1;</code>
        */
       @java.lang.Override
-
       public long getLabelsOrThrow(
           long key) {
-        
+
         java.util.Map<java.lang.Long, java.lang.Long> map =
             internalGetLabels().getMap();
         if (!map.containsKey(key)) {
@@ -652,8 +593,8 @@ public long getLabelsOrThrow(
         }
         return map.get(key);
       }
-
       public Builder clearLabels() {
+        bitField0_ = (bitField0_ & ~0x00000001);
         internalGetMutableLabels().getMutableMap()
             .clear();
         return this;
@@ -661,10 +602,9 @@ public Builder clearLabels() {
       /**
        * <code>map&lt;int64, int64&gt; labels = 1;</code>
        */
-
       public Builder removeLabels(
           long key) {
-        
+
         internalGetMutableLabels().getMutableMap()
             .remove(key);
         return this;
@@ -674,7 +614,8 @@ public Builder removeLabels(
        */
       @java.lang.Deprecated
       public java.util.Map<java.lang.Long, java.lang.Long>
-      getMutableLabels() {
+          getMutableLabels() {
+        bitField0_ |= 0x00000001;
         return internalGetMutableLabels().getMutableMap();
       }
       /**
@@ -683,34 +624,23 @@ public Builder removeLabels(
       public Builder putLabels(
           long key,
           long value) {
-        
-        
+
+
         internalGetMutableLabels().getMutableMap()
             .put(key, value);
+        bitField0_ |= 0x00000001;
         return this;
       }
       /**
        * <code>map&lt;int64, int64&gt; labels = 1;</code>
        */
-
       public Builder putAllLabels(
           java.util.Map<java.lang.Long, java.lang.Long> values) {
         internalGetMutableLabels().getMutableMap()
             .putAll(values);
+        bitField0_ |= 0x00000001;
         return this;
       }
-      @java.lang.Override
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFields(unknownFields);
-      }
-
-      @java.lang.Override
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
 
       // @@protoc_insertion_point(builder_scope:io.pyroscope.labels.pb.Context)
     }
@@ -732,7 +662,18 @@ public Context parsePartialFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws com.google.protobuf.InvalidProtocolBufferException {
-        return new Context(input, extensionRegistry);
+        Builder builder = newBuilder();
+        try {
+          builder.mergeFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          throw e.setUnfinishedMessage(builder.buildPartial());
+        } catch (com.google.protobuf.UninitializedMessageException e) {
+          throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
+        } catch (java.io.IOException e) {
+          throw new com.google.protobuf.InvalidProtocolBufferException(e)
+              .setUnfinishedMessage(builder.buildPartial());
+        }
+        return builder.buildPartial();
       }
     };
 
@@ -752,8 +693,8 @@ public io.pyroscope.labels.pb.JfrLabels.Context getDefaultInstanceForType() {
 
   }
 
-  public interface SnapshotOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:io.pyroscope.labels.pb.Snapshot)
+  public interface LabelsSnapshotOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:io.pyroscope.labels.pb.LabelsSnapshot)
       com.google.protobuf.MessageOrBuilder {
 
     /**
@@ -779,14 +720,14 @@ boolean containsContexts(
     /**
      * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
      */
-
-    io.pyroscope.labels.pb.JfrLabels.Context getContextsOrDefault(
+    /* nullable */
+io.pyroscope.labels.pb.JfrLabels.Context getContextsOrDefault(
         long key,
-        io.pyroscope.labels.pb.JfrLabels.Context defaultValue);
+        /* nullable */
+io.pyroscope.labels.pb.JfrLabels.Context defaultValue);
     /**
      * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
      */
-
     io.pyroscope.labels.pb.JfrLabels.Context getContextsOrThrow(
         long key);
 
@@ -813,116 +754,49 @@ boolean containsStrings(
     /**
      * <code>map&lt;int64, string&gt; strings = 2;</code>
      */
-
-    java.lang.String getStringsOrDefault(
+    /* nullable */
+java.lang.String getStringsOrDefault(
         long key,
-        java.lang.String defaultValue);
+        /* nullable */
+java.lang.String defaultValue);
     /**
      * <code>map&lt;int64, string&gt; strings = 2;</code>
      */
-
     java.lang.String getStringsOrThrow(
         long key);
   }
   /**
-   * Protobuf type {@code io.pyroscope.labels.pb.Snapshot}
+   * Protobuf type {@code io.pyroscope.labels.pb.LabelsSnapshot}
    */
-  public static final class Snapshot extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:io.pyroscope.labels.pb.Snapshot)
-      SnapshotOrBuilder {
+  public static final class LabelsSnapshot extends
+      com.google.protobuf.GeneratedMessage implements
+      // @@protoc_insertion_point(message_implements:io.pyroscope.labels.pb.LabelsSnapshot)
+      LabelsSnapshotOrBuilder {
   private static final long serialVersionUID = 0L;
-    // Use Snapshot.newBuilder() to construct.
-    private Snapshot(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    static {
+      com.google.protobuf.RuntimeVersion.validateProtobufGencodeVersion(
+        com.google.protobuf.RuntimeVersion.RuntimeDomain.PUBLIC,
+        /* major= */ 4,
+        /* minor= */ 26,
+        /* patch= */ 1,
+        /* suffix= */ "",
+        LabelsSnapshot.class.getName());
+    }
+    // Use LabelsSnapshot.newBuilder() to construct.
+    private LabelsSnapshot(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
       super(builder);
     }
-    private Snapshot() {
-    }
-
-    @java.lang.Override
-    @SuppressWarnings({"unused"})
-    protected java.lang.Object newInstance(
-        UnusedPrivateParameter unused) {
-      return new Snapshot();
+    private LabelsSnapshot() {
     }
 
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private Snapshot(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      if (extensionRegistry == null) {
-        throw new java.lang.NullPointerException();
-      }
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            case 10: {
-              if (!((mutable_bitField0_ & 0x00000001) != 0)) {
-                contexts_ = com.google.protobuf.MapField.newMapField(
-                    ContextsDefaultEntryHolder.defaultEntry);
-                mutable_bitField0_ |= 0x00000001;
-              }
-              com.google.protobuf.MapEntry<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context>
-              contexts__ = input.readMessage(
-                  ContextsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
-              contexts_.getMutableMap().put(
-                  contexts__.getKey(), contexts__.getValue());
-              break;
-            }
-            case 18: {
-              if (!((mutable_bitField0_ & 0x00000002) != 0)) {
-                strings_ = com.google.protobuf.MapField.newMapField(
-                    StringsDefaultEntryHolder.defaultEntry);
-                mutable_bitField0_ |= 0x00000002;
-              }
-              com.google.protobuf.MapEntry<java.lang.Long, java.lang.String>
-              strings__ = input.readMessage(
-                  StringsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
-              strings_.getMutableMap().put(
-                  strings__.getKey(), strings__.getValue());
-              break;
-            }
-            default: {
-              if (!parseUnknownField(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_Snapshot_descriptor;
+      return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_LabelsSnapshot_descriptor;
     }
 
     @SuppressWarnings({"rawtypes"})
     @java.lang.Override
-    protected com.google.protobuf.MapField internalGetMapField(
+    protected com.google.protobuf.MapFieldReflectionAccessor internalGetMapFieldReflection(
         int number) {
       switch (number) {
         case 1:
@@ -935,11 +809,11 @@ protected com.google.protobuf.MapField internalGetMapField(
       }
     }
     @java.lang.Override
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_Snapshot_fieldAccessorTable
+      return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_LabelsSnapshot_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              io.pyroscope.labels.pb.JfrLabels.Snapshot.class, io.pyroscope.labels.pb.JfrLabels.Snapshot.Builder.class);
+              io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot.class, io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot.Builder.class);
     }
 
     public static final int CONTEXTS_FIELD_NUMBER = 1;
@@ -948,12 +822,13 @@ private static final class ContextsDefaultEntryHolder {
           java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> defaultEntry =
               com.google.protobuf.MapEntry
               .<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context>newDefaultInstance(
-                  io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_Snapshot_ContextsEntry_descriptor, 
+                  io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_LabelsSnapshot_ContextsEntry_descriptor, 
                   com.google.protobuf.WireFormat.FieldType.INT64,
                   0L,
                   com.google.protobuf.WireFormat.FieldType.MESSAGE,
                   io.pyroscope.labels.pb.JfrLabels.Context.getDefaultInstance());
     }
+    @SuppressWarnings("serial")
     private com.google.protobuf.MapField<
         java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> contexts_;
     private com.google.protobuf.MapField<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context>
@@ -964,18 +839,16 @@ private static final class ContextsDefaultEntryHolder {
       }
       return contexts_;
     }
-
     public int getContextsCount() {
       return internalGetContexts().getMap().size();
     }
     /**
      * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
      */
-
     @java.lang.Override
     public boolean containsContexts(
         long key) {
-      
+
       return internalGetContexts().getMap().containsKey(key);
     }
     /**
@@ -990,7 +863,6 @@ public java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> g
      * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
      */
     @java.lang.Override
-
     public java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> getContextsMap() {
       return internalGetContexts().getMap();
     }
@@ -998,11 +870,12 @@ public java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> g
      * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
      */
     @java.lang.Override
-
-    public io.pyroscope.labels.pb.JfrLabels.Context getContextsOrDefault(
+    public /* nullable */
+io.pyroscope.labels.pb.JfrLabels.Context getContextsOrDefault(
         long key,
-        io.pyroscope.labels.pb.JfrLabels.Context defaultValue) {
-      
+        /* nullable */
+io.pyroscope.labels.pb.JfrLabels.Context defaultValue) {
+
       java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> map =
           internalGetContexts().getMap();
       return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -1011,10 +884,9 @@ public io.pyroscope.labels.pb.JfrLabels.Context getContextsOrDefault(
      * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
      */
     @java.lang.Override
-
     public io.pyroscope.labels.pb.JfrLabels.Context getContextsOrThrow(
         long key) {
-      
+
       java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> map =
           internalGetContexts().getMap();
       if (!map.containsKey(key)) {
@@ -1029,12 +901,13 @@ private static final class StringsDefaultEntryHolder {
           java.lang.Long, java.lang.String> defaultEntry =
               com.google.protobuf.MapEntry
               .<java.lang.Long, java.lang.String>newDefaultInstance(
-                  io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_Snapshot_StringsEntry_descriptor, 
+                  io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_LabelsSnapshot_StringsEntry_descriptor, 
                   com.google.protobuf.WireFormat.FieldType.INT64,
                   0L,
                   com.google.protobuf.WireFormat.FieldType.STRING,
                   "");
     }
+    @SuppressWarnings("serial")
     private com.google.protobuf.MapField<
         java.lang.Long, java.lang.String> strings_;
     private com.google.protobuf.MapField<java.lang.Long, java.lang.String>
@@ -1045,18 +918,16 @@ private static final class StringsDefaultEntryHolder {
       }
       return strings_;
     }
-
     public int getStringsCount() {
       return internalGetStrings().getMap().size();
     }
     /**
      * <code>map&lt;int64, string&gt; strings = 2;</code>
      */
-
     @java.lang.Override
     public boolean containsStrings(
         long key) {
-      
+
       return internalGetStrings().getMap().containsKey(key);
     }
     /**
@@ -1071,7 +942,6 @@ public java.util.Map<java.lang.Long, java.lang.String> getStrings() {
      * <code>map&lt;int64, string&gt; strings = 2;</code>
      */
     @java.lang.Override
-
     public java.util.Map<java.lang.Long, java.lang.String> getStringsMap() {
       return internalGetStrings().getMap();
     }
@@ -1079,11 +949,12 @@ public java.util.Map<java.lang.Long, java.lang.String> getStringsMap() {
      * <code>map&lt;int64, string&gt; strings = 2;</code>
      */
     @java.lang.Override
-
-    public java.lang.String getStringsOrDefault(
+    public /* nullable */
+java.lang.String getStringsOrDefault(
         long key,
-        java.lang.String defaultValue) {
-      
+        /* nullable */
+java.lang.String defaultValue) {
+
       java.util.Map<java.lang.Long, java.lang.String> map =
           internalGetStrings().getMap();
       return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -1092,10 +963,9 @@ public java.lang.String getStringsOrDefault(
      * <code>map&lt;int64, string&gt; strings = 2;</code>
      */
     @java.lang.Override
-
     public java.lang.String getStringsOrThrow(
         long key) {
-      
+
       java.util.Map<java.lang.Long, java.lang.String> map =
           internalGetStrings().getMap();
       if (!map.containsKey(key)) {
@@ -1118,19 +988,19 @@ public final boolean isInitialized() {
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      com.google.protobuf.GeneratedMessageV3
+      com.google.protobuf.GeneratedMessage
         .serializeLongMapTo(
           output,
           internalGetContexts(),
           ContextsDefaultEntryHolder.defaultEntry,
           1);
-      com.google.protobuf.GeneratedMessageV3
+      com.google.protobuf.GeneratedMessage
         .serializeLongMapTo(
           output,
           internalGetStrings(),
           StringsDefaultEntryHolder.defaultEntry,
           2);
-      unknownFields.writeTo(output);
+      getUnknownFields().writeTo(output);
     }
 
     @java.lang.Override
@@ -1159,7 +1029,7 @@ public int getSerializedSize() {
         size += com.google.protobuf.CodedOutputStream
             .computeMessageSize(2, strings__);
       }
-      size += unknownFields.getSerializedSize();
+      size += getUnknownFields().getSerializedSize();
       memoizedSize = size;
       return size;
     }
@@ -1169,16 +1039,16 @@ public boolean equals(final java.lang.Object obj) {
       if (obj == this) {
        return true;
       }
-      if (!(obj instanceof io.pyroscope.labels.pb.JfrLabels.Snapshot)) {
+      if (!(obj instanceof io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot)) {
         return super.equals(obj);
       }
-      io.pyroscope.labels.pb.JfrLabels.Snapshot other = (io.pyroscope.labels.pb.JfrLabels.Snapshot) obj;
+      io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot other = (io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot) obj;
 
       if (!internalGetContexts().equals(
           other.internalGetContexts())) return false;
       if (!internalGetStrings().equals(
           other.internalGetStrings())) return false;
-      if (!unknownFields.equals(other.unknownFields)) return false;
+      if (!getUnknownFields().equals(other.getUnknownFields())) return false;
       return true;
     }
 
@@ -1197,78 +1067,80 @@ public int hashCode() {
         hash = (37 * hash) + STRINGS_FIELD_NUMBER;
         hash = (53 * hash) + internalGetStrings().hashCode();
       }
-      hash = (29 * hash) + unknownFields.hashCode();
+      hash = (29 * hash) + getUnknownFields().hashCode();
       memoizedHashCode = hash;
       return hash;
     }
 
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseFrom(
         java.nio.ByteBuffer data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseFrom(
         java.nio.ByteBuffer data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(byte[] data)
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(java.io.InputStream input)
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseWithIOException(PARSER, input);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseDelimitedFrom(java.io.InputStream input)
+
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseDelimitedWithIOException(PARSER, input);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseDelimitedFrom(
+
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseWithIOException(PARSER, input);
     }
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
+      return com.google.protobuf.GeneratedMessage
           .parseWithIOException(PARSER, input, extensionRegistry);
     }
 
@@ -1277,7 +1149,7 @@ public static io.pyroscope.labels.pb.JfrLabels.Snapshot parseFrom(
     public static Builder newBuilder() {
       return DEFAULT_INSTANCE.toBuilder();
     }
-    public static Builder newBuilder(io.pyroscope.labels.pb.JfrLabels.Snapshot prototype) {
+    public static Builder newBuilder(io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot prototype) {
       return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
     }
     @java.lang.Override
@@ -1288,24 +1160,24 @@ public Builder toBuilder() {
 
     @java.lang.Override
     protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
       Builder builder = new Builder(parent);
       return builder;
     }
     /**
-     * Protobuf type {@code io.pyroscope.labels.pb.Snapshot}
+     * Protobuf type {@code io.pyroscope.labels.pb.LabelsSnapshot}
      */
     public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:io.pyroscope.labels.pb.Snapshot)
-        io.pyroscope.labels.pb.JfrLabels.SnapshotOrBuilder {
+        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:io.pyroscope.labels.pb.LabelsSnapshot)
+        io.pyroscope.labels.pb.JfrLabels.LabelsSnapshotOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_Snapshot_descriptor;
+        return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_LabelsSnapshot_descriptor;
       }
 
       @SuppressWarnings({"rawtypes"})
-      protected com.google.protobuf.MapField internalGetMapField(
+      protected com.google.protobuf.MapFieldReflectionAccessor internalGetMapFieldReflection(
           int number) {
         switch (number) {
           case 1:
@@ -1318,7 +1190,7 @@ protected com.google.protobuf.MapField internalGetMapField(
         }
       }
       @SuppressWarnings({"rawtypes"})
-      protected com.google.protobuf.MapField internalGetMutableMapField(
+      protected com.google.protobuf.MapFieldReflectionAccessor internalGetMutableMapFieldReflection(
           int number) {
         switch (number) {
           case 1:
@@ -1331,31 +1203,27 @@ protected com.google.protobuf.MapField internalGetMutableMapField(
         }
       }
       @java.lang.Override
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_Snapshot_fieldAccessorTable
+        return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_LabelsSnapshot_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                io.pyroscope.labels.pb.JfrLabels.Snapshot.class, io.pyroscope.labels.pb.JfrLabels.Snapshot.Builder.class);
+                io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot.class, io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot.Builder.class);
       }
 
-      // Construct using io.pyroscope.labels.pb.JfrLabels.Snapshot.newBuilder()
+      // Construct using io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot.newBuilder()
       private Builder() {
-        maybeForceBuilderInitialization();
+
       }
 
       private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
         super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
+
       }
       @java.lang.Override
       public Builder clear() {
         super.clear();
+        bitField0_ = 0;
         internalGetMutableContexts().clear();
         internalGetMutableStrings().clear();
         return this;
@@ -1364,17 +1232,17 @@ public Builder clear() {
       @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_Snapshot_descriptor;
+        return io.pyroscope.labels.pb.JfrLabels.internal_static_io_pyroscope_labels_pb_LabelsSnapshot_descriptor;
       }
 
       @java.lang.Override
-      public io.pyroscope.labels.pb.JfrLabels.Snapshot getDefaultInstanceForType() {
-        return io.pyroscope.labels.pb.JfrLabels.Snapshot.getDefaultInstance();
+      public io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot getDefaultInstanceForType() {
+        return io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot.getDefaultInstance();
       }
 
       @java.lang.Override
-      public io.pyroscope.labels.pb.JfrLabels.Snapshot build() {
-        io.pyroscope.labels.pb.JfrLabels.Snapshot result = buildPartial();
+      public io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot build() {
+        io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
@@ -1382,66 +1250,43 @@ public io.pyroscope.labels.pb.JfrLabels.Snapshot build() {
       }
 
       @java.lang.Override
-      public io.pyroscope.labels.pb.JfrLabels.Snapshot buildPartial() {
-        io.pyroscope.labels.pb.JfrLabels.Snapshot result = new io.pyroscope.labels.pb.JfrLabels.Snapshot(this);
-        int from_bitField0_ = bitField0_;
-        result.contexts_ = internalGetContexts();
-        result.contexts_.makeImmutable();
-        result.strings_ = internalGetStrings();
-        result.strings_.makeImmutable();
+      public io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot buildPartial() {
+        io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot result = new io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot(this);
+        if (bitField0_ != 0) { buildPartial0(result); }
         onBuilt();
         return result;
       }
 
-      @java.lang.Override
-      public Builder clone() {
-        return super.clone();
-      }
-      @java.lang.Override
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return super.setField(field, value);
-      }
-      @java.lang.Override
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return super.clearField(field);
-      }
-      @java.lang.Override
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return super.clearOneof(oneof);
-      }
-      @java.lang.Override
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return super.setRepeatedField(field, index, value);
-      }
-      @java.lang.Override
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return super.addRepeatedField(field, value);
+      private void buildPartial0(io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot result) {
+        int from_bitField0_ = bitField0_;
+        if (((from_bitField0_ & 0x00000001) != 0)) {
+          result.contexts_ = internalGetContexts().build(ContextsDefaultEntryHolder.defaultEntry);
+        }
+        if (((from_bitField0_ & 0x00000002) != 0)) {
+          result.strings_ = internalGetStrings();
+          result.strings_.makeImmutable();
+        }
       }
+
       @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof io.pyroscope.labels.pb.JfrLabels.Snapshot) {
-          return mergeFrom((io.pyroscope.labels.pb.JfrLabels.Snapshot)other);
+        if (other instanceof io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot) {
+          return mergeFrom((io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(io.pyroscope.labels.pb.JfrLabels.Snapshot other) {
-        if (other == io.pyroscope.labels.pb.JfrLabels.Snapshot.getDefaultInstance()) return this;
+      public Builder mergeFrom(io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot other) {
+        if (other == io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot.getDefaultInstance()) return this;
         internalGetMutableContexts().mergeFrom(
             other.internalGetContexts());
+        bitField0_ |= 0x00000001;
         internalGetMutableStrings().mergeFrom(
             other.internalGetStrings());
-        this.mergeUnknownFields(other.unknownFields);
+        bitField0_ |= 0x00000002;
+        this.mergeUnknownFields(other.getUnknownFields());
         onChanged();
         return this;
       }
@@ -1456,56 +1301,95 @@ public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        io.pyroscope.labels.pb.JfrLabels.Snapshot parsedMessage = null;
+        if (extensionRegistry == null) {
+          throw new java.lang.NullPointerException();
+        }
         try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+          boolean done = false;
+          while (!done) {
+            int tag = input.readTag();
+            switch (tag) {
+              case 0:
+                done = true;
+                break;
+              case 10: {
+                com.google.protobuf.MapEntry<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context>
+                contexts__ = input.readMessage(
+                    ContextsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
+                internalGetMutableContexts().ensureBuilderMap().put(
+                    contexts__.getKey(), contexts__.getValue());
+                bitField0_ |= 0x00000001;
+                break;
+              } // case 10
+              case 18: {
+                com.google.protobuf.MapEntry<java.lang.Long, java.lang.String>
+                strings__ = input.readMessage(
+                    StringsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
+                internalGetMutableStrings().getMutableMap().put(
+                    strings__.getKey(), strings__.getValue());
+                bitField0_ |= 0x00000002;
+                break;
+              } // case 18
+              default: {
+                if (!super.parseUnknownField(input, extensionRegistry, tag)) {
+                  done = true; // was an endgroup tag
+                }
+                break;
+              } // default:
+            } // switch (tag)
+          } // while (!done)
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (io.pyroscope.labels.pb.JfrLabels.Snapshot) e.getUnfinishedMessage();
           throw e.unwrapIOException();
         } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
+          onChanged();
+        } // finally
         return this;
       }
       private int bitField0_;
 
-      private com.google.protobuf.MapField<
-          java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> contexts_;
-      private com.google.protobuf.MapField<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context>
-      internalGetContexts() {
+      private static final class ContextsConverter implements com.google.protobuf.MapFieldBuilder.Converter<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.ContextOrBuilder, io.pyroscope.labels.pb.JfrLabels.Context> {
+        @java.lang.Override
+        public io.pyroscope.labels.pb.JfrLabels.Context build(io.pyroscope.labels.pb.JfrLabels.ContextOrBuilder val) {
+          if (val instanceof io.pyroscope.labels.pb.JfrLabels.Context) { return (io.pyroscope.labels.pb.JfrLabels.Context) val; }
+          return ((io.pyroscope.labels.pb.JfrLabels.Context.Builder) val).build();
+        }
+
+        @java.lang.Override
+        public com.google.protobuf.MapEntry<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> defaultEntry() {
+          return ContextsDefaultEntryHolder.defaultEntry;
+        }
+      };
+      private static final ContextsConverter contextsConverter = new ContextsConverter();
+
+      private com.google.protobuf.MapFieldBuilder<
+          java.lang.Long, io.pyroscope.labels.pb.JfrLabels.ContextOrBuilder, io.pyroscope.labels.pb.JfrLabels.Context, io.pyroscope.labels.pb.JfrLabels.Context.Builder> contexts_;
+      private com.google.protobuf.MapFieldBuilder<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.ContextOrBuilder, io.pyroscope.labels.pb.JfrLabels.Context, io.pyroscope.labels.pb.JfrLabels.Context.Builder>
+          internalGetContexts() {
         if (contexts_ == null) {
-          return com.google.protobuf.MapField.emptyMapField(
-              ContextsDefaultEntryHolder.defaultEntry);
+          return new com.google.protobuf.MapFieldBuilder<>(contextsConverter);
         }
         return contexts_;
       }
-      private com.google.protobuf.MapField<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context>
-      internalGetMutableContexts() {
-        onChanged();;
+      private com.google.protobuf.MapFieldBuilder<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.ContextOrBuilder, io.pyroscope.labels.pb.JfrLabels.Context, io.pyroscope.labels.pb.JfrLabels.Context.Builder>
+          internalGetMutableContexts() {
         if (contexts_ == null) {
-          contexts_ = com.google.protobuf.MapField.newMapField(
-              ContextsDefaultEntryHolder.defaultEntry);
-        }
-        if (!contexts_.isMutable()) {
-          contexts_ = contexts_.copy();
+          contexts_ = new com.google.protobuf.MapFieldBuilder<>(contextsConverter);
         }
+        bitField0_ |= 0x00000001;
+        onChanged();
         return contexts_;
       }
-
       public int getContextsCount() {
-        return internalGetContexts().getMap().size();
+        return internalGetContexts().ensureBuilderMap().size();
       }
       /**
        * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
        */
-
       @java.lang.Override
       public boolean containsContexts(
           long key) {
-        
-        return internalGetContexts().getMap().containsKey(key);
+
+        return internalGetContexts().ensureBuilderMap().containsKey(key);
       }
       /**
        * Use {@link #getContextsMap()} instead.
@@ -1519,52 +1403,47 @@ public java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> g
        * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
        */
       @java.lang.Override
-
       public java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> getContextsMap() {
-        return internalGetContexts().getMap();
+        return internalGetContexts().getImmutableMap();
       }
       /**
        * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
        */
       @java.lang.Override
-
-      public io.pyroscope.labels.pb.JfrLabels.Context getContextsOrDefault(
+      public /* nullable */
+io.pyroscope.labels.pb.JfrLabels.Context getContextsOrDefault(
           long key,
-          io.pyroscope.labels.pb.JfrLabels.Context defaultValue) {
-        
-        java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> map =
-            internalGetContexts().getMap();
-        return map.containsKey(key) ? map.get(key) : defaultValue;
+          /* nullable */
+io.pyroscope.labels.pb.JfrLabels.Context defaultValue) {
+
+        java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.ContextOrBuilder> map = internalGetMutableContexts().ensureBuilderMap();
+        return map.containsKey(key) ? contextsConverter.build(map.get(key)) : defaultValue;
       }
       /**
        * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
        */
       @java.lang.Override
-
       public io.pyroscope.labels.pb.JfrLabels.Context getContextsOrThrow(
           long key) {
-        
-        java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> map =
-            internalGetContexts().getMap();
+
+        java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.ContextOrBuilder> map = internalGetMutableContexts().ensureBuilderMap();
         if (!map.containsKey(key)) {
           throw new java.lang.IllegalArgumentException();
         }
-        return map.get(key);
+        return contextsConverter.build(map.get(key));
       }
-
       public Builder clearContexts() {
-        internalGetMutableContexts().getMutableMap()
-            .clear();
+        bitField0_ = (bitField0_ & ~0x00000001);
+        internalGetMutableContexts().clear();
         return this;
       }
       /**
        * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
        */
-
       public Builder removeContexts(
           long key) {
-        
-        internalGetMutableContexts().getMutableMap()
+
+        internalGetMutableContexts().ensureBuilderMap()
             .remove(key);
         return this;
       }
@@ -1573,8 +1452,9 @@ public Builder removeContexts(
        */
       @java.lang.Deprecated
       public java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context>
-      getMutableContexts() {
-        return internalGetMutableContexts().getMutableMap();
+          getMutableContexts() {
+        bitField0_ |= 0x00000001;
+        return internalGetMutableContexts().ensureMessageMap();
       }
       /**
        * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
@@ -1582,30 +1462,50 @@ public Builder removeContexts(
       public Builder putContexts(
           long key,
           io.pyroscope.labels.pb.JfrLabels.Context value) {
-        
-        if (value == null) {
-  throw new NullPointerException("map value");
-}
 
-        internalGetMutableContexts().getMutableMap()
+        if (value == null) { throw new NullPointerException("map value"); }
+        internalGetMutableContexts().ensureBuilderMap()
             .put(key, value);
+        bitField0_ |= 0x00000001;
         return this;
       }
       /**
        * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
        */
-
       public Builder putAllContexts(
           java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> values) {
-        internalGetMutableContexts().getMutableMap()
+        for (java.util.Map.Entry<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.Context> e : values.entrySet()) {
+          if (e.getKey() == null || e.getValue() == null) {
+            throw new NullPointerException();
+          }
+        }
+        internalGetMutableContexts().ensureBuilderMap()
             .putAll(values);
+        bitField0_ |= 0x00000001;
         return this;
       }
+      /**
+       * <code>map&lt;int64, .io.pyroscope.labels.pb.Context&gt; contexts = 1;</code>
+       */
+      public io.pyroscope.labels.pb.JfrLabels.Context.Builder putContextsBuilderIfAbsent(
+          long key) {
+        java.util.Map<java.lang.Long, io.pyroscope.labels.pb.JfrLabels.ContextOrBuilder> builderMap = internalGetMutableContexts().ensureBuilderMap();
+        io.pyroscope.labels.pb.JfrLabels.ContextOrBuilder entry = builderMap.get(key);
+        if (entry == null) {
+          entry = io.pyroscope.labels.pb.JfrLabels.Context.newBuilder();
+          builderMap.put(key, entry);
+        }
+        if (entry instanceof io.pyroscope.labels.pb.JfrLabels.Context) {
+          entry = ((io.pyroscope.labels.pb.JfrLabels.Context) entry).toBuilder();
+          builderMap.put(key, entry);
+        }
+        return (io.pyroscope.labels.pb.JfrLabels.Context.Builder) entry;
+      }
 
       private com.google.protobuf.MapField<
           java.lang.Long, java.lang.String> strings_;
       private com.google.protobuf.MapField<java.lang.Long, java.lang.String>
-      internalGetStrings() {
+          internalGetStrings() {
         if (strings_ == null) {
           return com.google.protobuf.MapField.emptyMapField(
               StringsDefaultEntryHolder.defaultEntry);
@@ -1613,8 +1513,7 @@ public Builder putAllContexts(
         return strings_;
       }
       private com.google.protobuf.MapField<java.lang.Long, java.lang.String>
-      internalGetMutableStrings() {
-        onChanged();;
+          internalGetMutableStrings() {
         if (strings_ == null) {
           strings_ = com.google.protobuf.MapField.newMapField(
               StringsDefaultEntryHolder.defaultEntry);
@@ -1622,20 +1521,20 @@ public Builder putAllContexts(
         if (!strings_.isMutable()) {
           strings_ = strings_.copy();
         }
+        bitField0_ |= 0x00000002;
+        onChanged();
         return strings_;
       }
-
       public int getStringsCount() {
         return internalGetStrings().getMap().size();
       }
       /**
        * <code>map&lt;int64, string&gt; strings = 2;</code>
        */
-
       @java.lang.Override
       public boolean containsStrings(
           long key) {
-        
+
         return internalGetStrings().getMap().containsKey(key);
       }
       /**
@@ -1650,7 +1549,6 @@ public java.util.Map<java.lang.Long, java.lang.String> getStrings() {
        * <code>map&lt;int64, string&gt; strings = 2;</code>
        */
       @java.lang.Override
-
       public java.util.Map<java.lang.Long, java.lang.String> getStringsMap() {
         return internalGetStrings().getMap();
       }
@@ -1658,11 +1556,12 @@ public java.util.Map<java.lang.Long, java.lang.String> getStringsMap() {
        * <code>map&lt;int64, string&gt; strings = 2;</code>
        */
       @java.lang.Override
-
-      public java.lang.String getStringsOrDefault(
+      public /* nullable */
+java.lang.String getStringsOrDefault(
           long key,
-          java.lang.String defaultValue) {
-        
+          /* nullable */
+java.lang.String defaultValue) {
+
         java.util.Map<java.lang.Long, java.lang.String> map =
             internalGetStrings().getMap();
         return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -1671,10 +1570,9 @@ public java.lang.String getStringsOrDefault(
        * <code>map&lt;int64, string&gt; strings = 2;</code>
        */
       @java.lang.Override
-
       public java.lang.String getStringsOrThrow(
           long key) {
-        
+
         java.util.Map<java.lang.Long, java.lang.String> map =
             internalGetStrings().getMap();
         if (!map.containsKey(key)) {
@@ -1682,8 +1580,8 @@ public java.lang.String getStringsOrThrow(
         }
         return map.get(key);
       }
-
       public Builder clearStrings() {
+        bitField0_ = (bitField0_ & ~0x00000002);
         internalGetMutableStrings().getMutableMap()
             .clear();
         return this;
@@ -1691,10 +1589,9 @@ public Builder clearStrings() {
       /**
        * <code>map&lt;int64, string&gt; strings = 2;</code>
        */
-
       public Builder removeStrings(
           long key) {
-        
+
         internalGetMutableStrings().getMutableMap()
             .remove(key);
         return this;
@@ -1704,7 +1601,8 @@ public Builder removeStrings(
        */
       @java.lang.Deprecated
       public java.util.Map<java.lang.Long, java.lang.String>
-      getMutableStrings() {
+          getMutableStrings() {
+        bitField0_ |= 0x00000002;
         return internalGetMutableStrings().getMutableMap();
       }
       /**
@@ -1713,73 +1611,70 @@ public Builder removeStrings(
       public Builder putStrings(
           long key,
           java.lang.String value) {
-        
-        if (value == null) {
-  throw new NullPointerException("map value");
-}
 
+        if (value == null) { throw new NullPointerException("map value"); }
         internalGetMutableStrings().getMutableMap()
             .put(key, value);
+        bitField0_ |= 0x00000002;
         return this;
       }
       /**
        * <code>map&lt;int64, string&gt; strings = 2;</code>
        */
-
       public Builder putAllStrings(
           java.util.Map<java.lang.Long, java.lang.String> values) {
         internalGetMutableStrings().getMutableMap()
             .putAll(values);
+        bitField0_ |= 0x00000002;
         return this;
       }
-      @java.lang.Override
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFields(unknownFields);
-      }
-
-      @java.lang.Override
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
 
-      // @@protoc_insertion_point(builder_scope:io.pyroscope.labels.pb.Snapshot)
+      // @@protoc_insertion_point(builder_scope:io.pyroscope.labels.pb.LabelsSnapshot)
     }
 
-    // @@protoc_insertion_point(class_scope:io.pyroscope.labels.pb.Snapshot)
-    private static final io.pyroscope.labels.pb.JfrLabels.Snapshot DEFAULT_INSTANCE;
+    // @@protoc_insertion_point(class_scope:io.pyroscope.labels.pb.LabelsSnapshot)
+    private static final io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot DEFAULT_INSTANCE;
     static {
-      DEFAULT_INSTANCE = new io.pyroscope.labels.pb.JfrLabels.Snapshot();
+      DEFAULT_INSTANCE = new io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot();
     }
 
-    public static io.pyroscope.labels.pb.JfrLabels.Snapshot getDefaultInstance() {
+    public static io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot getDefaultInstance() {
       return DEFAULT_INSTANCE;
     }
 
-    private static final com.google.protobuf.Parser<Snapshot>
-        PARSER = new com.google.protobuf.AbstractParser<Snapshot>() {
+    private static final com.google.protobuf.Parser<LabelsSnapshot>
+        PARSER = new com.google.protobuf.AbstractParser<LabelsSnapshot>() {
       @java.lang.Override
-      public Snapshot parsePartialFrom(
+      public LabelsSnapshot parsePartialFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws com.google.protobuf.InvalidProtocolBufferException {
-        return new Snapshot(input, extensionRegistry);
+        Builder builder = newBuilder();
+        try {
+          builder.mergeFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          throw e.setUnfinishedMessage(builder.buildPartial());
+        } catch (com.google.protobuf.UninitializedMessageException e) {
+          throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
+        } catch (java.io.IOException e) {
+          throw new com.google.protobuf.InvalidProtocolBufferException(e)
+              .setUnfinishedMessage(builder.buildPartial());
+        }
+        return builder.buildPartial();
       }
     };
 
-    public static com.google.protobuf.Parser<Snapshot> parser() {
+    public static com.google.protobuf.Parser<LabelsSnapshot> parser() {
       return PARSER;
     }
 
     @java.lang.Override
-    public com.google.protobuf.Parser<Snapshot> getParserForType() {
+    public com.google.protobuf.Parser<LabelsSnapshot> getParserForType() {
       return PARSER;
     }
 
     @java.lang.Override
-    public io.pyroscope.labels.pb.JfrLabels.Snapshot getDefaultInstanceForType() {
+    public io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot getDefaultInstanceForType() {
       return DEFAULT_INSTANCE;
     }
 
@@ -1788,28 +1683,28 @@ public io.pyroscope.labels.pb.JfrLabels.Snapshot getDefaultInstanceForType() {
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_io_pyroscope_labels_pb_Context_descriptor;
   private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
       internal_static_io_pyroscope_labels_pb_Context_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_io_pyroscope_labels_pb_Context_LabelsEntry_descriptor;
   private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
       internal_static_io_pyroscope_labels_pb_Context_LabelsEntry_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_io_pyroscope_labels_pb_Snapshot_descriptor;
+    internal_static_io_pyroscope_labels_pb_LabelsSnapshot_descriptor;
   private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_io_pyroscope_labels_pb_Snapshot_fieldAccessorTable;
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_io_pyroscope_labels_pb_LabelsSnapshot_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_io_pyroscope_labels_pb_Snapshot_ContextsEntry_descriptor;
+    internal_static_io_pyroscope_labels_pb_LabelsSnapshot_ContextsEntry_descriptor;
   private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_io_pyroscope_labels_pb_Snapshot_ContextsEntry_fieldAccessorTable;
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_io_pyroscope_labels_pb_LabelsSnapshot_ContextsEntry_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_io_pyroscope_labels_pb_Snapshot_StringsEntry_descriptor;
+    internal_static_io_pyroscope_labels_pb_LabelsSnapshot_StringsEntry_descriptor;
   private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_io_pyroscope_labels_pb_Snapshot_StringsEntry_fieldAccessorTable;
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_io_pyroscope_labels_pb_LabelsSnapshot_StringsEntry_fieldAccessorTable;
 
   public static com.google.protobuf.Descriptors.FileDescriptor
       getDescriptor() {
@@ -1823,14 +1718,14 @@ public io.pyroscope.labels.pb.JfrLabels.Snapshot getDefaultInstanceForType() {
       "pb\"u\n\007Context\022;\n\006labels\030\001 \003(\0132+.io.pyros" +
       "cope.labels.pb.Context.LabelsEntry\032-\n\013La" +
       "belsEntry\022\013\n\003key\030\001 \001(\003\022\r\n\005value\030\002 \001(\003:\0028" +
-      "\001\"\216\002\n\010Snapshot\022@\n\010contexts\030\001 \003(\0132..io.py" +
-      "roscope.labels.pb.Snapshot.ContextsEntry" +
-      "\022>\n\007strings\030\002 \003(\0132-.io.pyroscope.labels." +
-      "pb.Snapshot.StringsEntry\032P\n\rContextsEntr" +
-      "y\022\013\n\003key\030\001 \001(\003\022.\n\005value\030\002 \001(\0132\037.io.pyros" +
-      "cope.labels.pb.Context:\0028\001\032.\n\014StringsEnt" +
-      "ry\022\013\n\003key\030\001 \001(\003\022\r\n\005value\030\002 \001(\t:\0028\001b\006prot" +
-      "o3"
+      "\001\"\240\002\n\016LabelsSnapshot\022F\n\010contexts\030\001 \003(\01324" +
+      ".io.pyroscope.labels.pb.LabelsSnapshot.C" +
+      "ontextsEntry\022D\n\007strings\030\002 \003(\01323.io.pyros" +
+      "cope.labels.pb.LabelsSnapshot.StringsEnt" +
+      "ry\032P\n\rContextsEntry\022\013\n\003key\030\001 \001(\003\022.\n\005valu" +
+      "e\030\002 \001(\0132\037.io.pyroscope.labels.pb.Context" +
+      ":\0028\001\032.\n\014StringsEntry\022\013\n\003key\030\001 \001(\003\022\r\n\005val" +
+      "ue\030\002 \001(\t:\0028\001b\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -1839,33 +1734,34 @@ public io.pyroscope.labels.pb.JfrLabels.Snapshot getDefaultInstanceForType() {
     internal_static_io_pyroscope_labels_pb_Context_descriptor =
       getDescriptor().getMessageTypes().get(0);
     internal_static_io_pyroscope_labels_pb_Context_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
         internal_static_io_pyroscope_labels_pb_Context_descriptor,
         new java.lang.String[] { "Labels", });
     internal_static_io_pyroscope_labels_pb_Context_LabelsEntry_descriptor =
       internal_static_io_pyroscope_labels_pb_Context_descriptor.getNestedTypes().get(0);
     internal_static_io_pyroscope_labels_pb_Context_LabelsEntry_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
         internal_static_io_pyroscope_labels_pb_Context_LabelsEntry_descriptor,
         new java.lang.String[] { "Key", "Value", });
-    internal_static_io_pyroscope_labels_pb_Snapshot_descriptor =
+    internal_static_io_pyroscope_labels_pb_LabelsSnapshot_descriptor =
       getDescriptor().getMessageTypes().get(1);
-    internal_static_io_pyroscope_labels_pb_Snapshot_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_io_pyroscope_labels_pb_Snapshot_descriptor,
+    internal_static_io_pyroscope_labels_pb_LabelsSnapshot_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+        internal_static_io_pyroscope_labels_pb_LabelsSnapshot_descriptor,
         new java.lang.String[] { "Contexts", "Strings", });
-    internal_static_io_pyroscope_labels_pb_Snapshot_ContextsEntry_descriptor =
-      internal_static_io_pyroscope_labels_pb_Snapshot_descriptor.getNestedTypes().get(0);
-    internal_static_io_pyroscope_labels_pb_Snapshot_ContextsEntry_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_io_pyroscope_labels_pb_Snapshot_ContextsEntry_descriptor,
+    internal_static_io_pyroscope_labels_pb_LabelsSnapshot_ContextsEntry_descriptor =
+      internal_static_io_pyroscope_labels_pb_LabelsSnapshot_descriptor.getNestedTypes().get(0);
+    internal_static_io_pyroscope_labels_pb_LabelsSnapshot_ContextsEntry_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+        internal_static_io_pyroscope_labels_pb_LabelsSnapshot_ContextsEntry_descriptor,
         new java.lang.String[] { "Key", "Value", });
-    internal_static_io_pyroscope_labels_pb_Snapshot_StringsEntry_descriptor =
-      internal_static_io_pyroscope_labels_pb_Snapshot_descriptor.getNestedTypes().get(1);
-    internal_static_io_pyroscope_labels_pb_Snapshot_StringsEntry_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_io_pyroscope_labels_pb_Snapshot_StringsEntry_descriptor,
+    internal_static_io_pyroscope_labels_pb_LabelsSnapshot_StringsEntry_descriptor =
+      internal_static_io_pyroscope_labels_pb_LabelsSnapshot_descriptor.getNestedTypes().get(1);
+    internal_static_io_pyroscope_labels_pb_LabelsSnapshot_StringsEntry_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+        internal_static_io_pyroscope_labels_pb_LabelsSnapshot_StringsEntry_descriptor,
         new java.lang.String[] { "Key", "Value", });
+    descriptor.resolveAllFeaturesImmutable();
   }
 
   // @@protoc_insertion_point(outer_class_scope)
diff --git a/async-profiler-context/src/test/java/io/pyroscope/labels/LabelsTest.java b/async-profiler-context/src/test/java/io/pyroscope/labels/LabelsTest.java
index 48abe67..096f84f 100644
--- a/async-profiler-context/src/test/java/io/pyroscope/labels/LabelsTest.java
+++ b/async-profiler-context/src/test/java/io/pyroscope/labels/LabelsTest.java
@@ -2,7 +2,7 @@
 
 
 import io.pyroscope.labels.io.pyroscope.PyroscopeAsyncProfiler;
-import io.pyroscope.labels.pb.JfrLabels.Snapshot;
+import io.pyroscope.labels.pb.JfrLabels.LabelsSnapshot;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
@@ -57,7 +57,7 @@ void testOneLabelSet() {
             assertEquals(1, ctxRef.refCount.get());
 
             {
-                Snapshot snapshot = Pyroscope.LabelsWrapper.dump();
+                LabelsSnapshot snapshot = Pyroscope.LabelsWrapper.dump();
                 assertEquals(1, snapshot.getContextsCount());
                 assertEquals(2, snapshot.getStringsCount());
                 assertEquals("k1", snapshot.getStringsMap().get(1L));
@@ -73,7 +73,7 @@ void testOneLabelSet() {
         assertEquals(1, k1.refCount.get());
         assertEquals(1, v1.refCount.get());
         {
-            Snapshot snapshot = Pyroscope.LabelsWrapper.dump();
+            LabelsSnapshot snapshot = Pyroscope.LabelsWrapper.dump();
             assertEquals(1, snapshot.getContextsCount());
             assertEquals(2, snapshot.getStringsCount());
             assertEquals("k1", snapshot.getStringsMap().get(1L));
@@ -85,7 +85,7 @@ void testOneLabelSet() {
         }
 
         {
-            Snapshot snapshot = Pyroscope.LabelsWrapper.dump();
+            LabelsSnapshot snapshot = Pyroscope.LabelsWrapper.dump();
             assertEquals(0, snapshot.getContextsCount());
             assertEquals(0, snapshot.getStringsCount());
             assertEquals(-1, k1.refCount.get());
@@ -119,7 +119,7 @@ void testNestedEqualLabelSets() {
                 assertEquals(2, ctxRef.refCount.get());
 
                 {
-                    Snapshot snapshot = Pyroscope.LabelsWrapper.dump();
+                    LabelsSnapshot snapshot = Pyroscope.LabelsWrapper.dump();
                     assertEquals(1, snapshot.getContextsCount());
                     assertEquals(2, snapshot.getStringsCount());
                     assertEquals("k1", snapshot.getStringsMap().get(1L));
@@ -176,7 +176,7 @@ void testLabelsSetMerge() {
                     assertEquals(1, ctxRef.refCount.get());
 
                     {
-                        Snapshot snapshot = Pyroscope.LabelsWrapper.dump();
+                        LabelsSnapshot snapshot = Pyroscope.LabelsWrapper.dump();
                         assertEquals(3, snapshot.getContextsCount());
                         assertEquals(5, snapshot.getStringsCount());
                         assertEquals("k1", snapshot.getStringsMap().get(1L));