diff --git a/contracts/src/main/java/my/restate/e2e/services/Echo.java b/contracts/src/main/java/my/restate/e2e/services/Echo.java
index 5e3c3975..cae8d924 100644
--- a/contracts/src/main/java/my/restate/e2e/services/Echo.java
+++ b/contracts/src/main/java/my/restate/e2e/services/Echo.java
@@ -1,3 +1,12 @@
+// Copyright (c) 2024 - Restate Software, Inc., Restate GmbH
+//
+// This file is part of the Restate e2e tests,
+// which are released under the MIT license.
+//
+// You can find a copy of the license in file LICENSE in the root
+// directory of this repository or package, or at
+// https://github.com/restatedev/e2e/blob/main/LICENSE
+
 package my.restate.e2e.services;
 
 import dev.restate.sdk.Context;
diff --git a/services/java-services/src/main/java/my/restate/e2e/services/EchoImpl.java b/services/java-services/src/main/java/my/restate/e2e/services/EchoImpl.java
index d454e58c..be8d05ff 100644
--- a/services/java-services/src/main/java/my/restate/e2e/services/EchoImpl.java
+++ b/services/java-services/src/main/java/my/restate/e2e/services/EchoImpl.java
@@ -1,3 +1,12 @@
+// Copyright (c) 2024 - Restate Software, Inc., Restate GmbH
+//
+// This file is part of the Restate e2e tests,
+// which are released under the MIT license.
+//
+// You can find a copy of the license in file LICENSE in the root
+// directory of this repository or package, or at
+// https://github.com/restatedev/e2e/blob/main/LICENSE
+
 package my.restate.e2e.services;
 
 import dev.restate.sdk.Context;