diff --git a/test/echo_service.proto b/test/echo_service.proto
index fc941a29..11b4f18c 100644
--- a/test/echo_service.proto
+++ b/test/echo_service.proto
@@ -1,4 +1,4 @@
-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
diff --git a/test/test_messages.proto b/test/test_messages.proto
index 1b611b82..c77a937d 100644
--- a/test/test_messages.proto
+++ b/test/test_messages.proto
@@ -1,4 +1,4 @@
-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
diff --git a/test/test_service.proto b/test/test_service.proto
index c86ce51d..0ac2ae79 100644
--- a/test/test_service.proto
+++ b/test/test_service.proto
@@ -1,4 +1,4 @@
-// Copyright 2015, Google Inc.
+// Copyright 2015-2016, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without