diff --git a/src/main/java/org/openrewrite/FindCallGraph.java b/src/main/java/org/openrewrite/FindCallGraph.java
index 29910ca..501e692 100644
--- a/src/main/java/org/openrewrite/FindCallGraph.java
+++ b/src/main/java/org/openrewrite/FindCallGraph.java
@@ -17,7 +17,7 @@
 
 import lombok.EqualsAndHashCode;
 import lombok.Value;
-import org.openrewrite.internal.lang.Nullable;
+import org.jspecify.annotations.Nullable;
 import org.openrewrite.java.JavaIsoVisitor;
 import org.openrewrite.java.tree.J;
 import org.openrewrite.java.tree.JavaType;
@@ -108,7 +108,7 @@ public J.MemberReference visitMemberReference(J.MemberReference memberRef, Execu
                 return super.visitMemberReference(memberRef, ctx);
             }
 
-            private void recordCall(@Nullable JavaType.Method method, ExecutionContext ctx) {
+            private void recordCall(JavaType.@Nullable Method method, ExecutionContext ctx) {
                 if (method == null) {
                     return;
                 }
diff --git a/src/main/java/org/openrewrite/FindDuplicateSourceFiles.java b/src/main/java/org/openrewrite/FindDuplicateSourceFiles.java
index 6253a8f..c765fd1 100644
--- a/src/main/java/org/openrewrite/FindDuplicateSourceFiles.java
+++ b/src/main/java/org/openrewrite/FindDuplicateSourceFiles.java
@@ -15,7 +15,7 @@
  */
 package org.openrewrite;
 
-import org.openrewrite.internal.lang.Nullable;
+import org.jspecify.annotations.Nullable;
 import org.openrewrite.marker.SearchResult;
 import org.openrewrite.table.DuplicateSourceFiles;
 
diff --git a/src/main/java/org/openrewrite/LanguageComposition.java b/src/main/java/org/openrewrite/LanguageComposition.java
index 8f5219f..a0e18fd 100644
--- a/src/main/java/org/openrewrite/LanguageComposition.java
+++ b/src/main/java/org/openrewrite/LanguageComposition.java
@@ -18,10 +18,10 @@
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.Value;
+import org.jspecify.annotations.Nullable;
 import org.openrewrite.binary.Binary;
 import org.openrewrite.groovy.tree.G;
 import org.openrewrite.hcl.tree.Hcl;
-import org.openrewrite.internal.lang.Nullable;
 import org.openrewrite.java.tree.J;
 import org.openrewrite.json.tree.Json;
 import org.openrewrite.kotlin.tree.K;