diff --git a/test/cpp/interop/metrics_client.cc b/test/cpp/interop/metrics_client.cc
index cc304f2e89560d51422adf39b7961716c973af79..bd48c7d4ef2b9d564cc295ae8ad08139a3fba213 100644
--- a/test/cpp/interop/metrics_client.cc
+++ b/test/cpp/interop/metrics_client.cc
@@ -1,6 +1,6 @@
 /*
  *
- * 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/tools/gcp/utils/big_query_utils.py b/tools/gcp/utils/big_query_utils.py
index e2379fd1aa795a6d6350f93ea907185eb63891ca..7bb1e143549154279e3e90b8b5d93871303ec0b6 100755
--- a/tools/gcp/utils/big_query_utils.py
+++ b/tools/gcp/utils/big_query_utils.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python2.7
-# Copyright 2015-2016 Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
diff --git a/tools/gcp/utils/kubernetes_api.py b/tools/gcp/utils/kubernetes_api.py
index 2d3f771e93fa314aeee3167ba23671f80f9a2a6f..e8ddd2f1b3502dff664f61a1933833d6fc271108 100755
--- a/tools/gcp/utils/kubernetes_api.py
+++ b/tools/gcp/utils/kubernetes_api.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python2.7
-# Copyright 2015-2016 Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without