diff --git a/README.md b/README.md
index 78159fa..e1a1cb7 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ product.setBrand("Ocado");
 <dependency>
     <groupId>com.ocadotechnology.gembus</groupId>
   <artifactId>test-arranger</artifactId>
-  <version>1.4.10</version>
+  <version>1.4.13</version>
 </dependency>
 ```
 
diff --git a/pom.xml b/pom.xml
index 8f56e7d..66e83ae 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.ocadotechnology.gembus</groupId>
     <artifactId>test-arranger</artifactId>
-    <version>1.4.12</version>
+    <version>1.4.13</version>
     <packaging>jar</packaging>
     <name>test-arranger</name>
     <description>A tool for arranging test data with pseudo-random values.</description>
diff --git a/src/test/java/com/ocadotechnology/gembus/bugfix/concurrency/ConcurrencyTest.java b/src/test/java/com/ocadotechnology/gembus/bugfix/concurrency/ConcurrencyTest.java
index 76730c0..751a5a6 100644
--- a/src/test/java/com/ocadotechnology/gembus/bugfix/concurrency/ConcurrencyTest.java
+++ b/src/test/java/com/ocadotechnology/gembus/bugfix/concurrency/ConcurrencyTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright © 2020 Ocado (marian.jureczko@ocado.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.ocadotechnology.gembus.bugfix.concurrency;
 
 import com.ocadotechnology.gembus.test.Arranger;
diff --git a/src/test/java/com/ocadotechnology/gembus/bugfix/concurrency/CustomStruct.java b/src/test/java/com/ocadotechnology/gembus/bugfix/concurrency/CustomStruct.java
index f9cfdd4..83360e0 100644
--- a/src/test/java/com/ocadotechnology/gembus/bugfix/concurrency/CustomStruct.java
+++ b/src/test/java/com/ocadotechnology/gembus/bugfix/concurrency/CustomStruct.java
@@ -1,5 +1,23 @@
+/*
+ * Copyright © 2020 Ocado (marian.jureczko@ocado.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.ocadotechnology.gembus.bugfix.concurrency;
 
 import java.util.UUID;
 
-public record CustomStruct(String id, UUID uuid) {}
+public class CustomStruct{
+    String id;
+    UUID uuid;
+}