diff --git a/google/bigtable/v1/bigtable_data.proto b/google/bigtable/v1/bigtable_data.proto
index 290eb9116..95fbdca16 100644
--- a/google/bigtable/v1/bigtable_data.proto
+++ b/google/bigtable/v1/bigtable_data.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, Google Inc.
+// Copyright 2016 Google Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/google/bigtable/v1/bigtable_service.proto b/google/bigtable/v1/bigtable_service.proto
index f1a83d351..9af89c5be 100644
--- a/google/bigtable/v1/bigtable_service.proto
+++ b/google/bigtable/v1/bigtable_service.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, Google Inc.
+// Copyright 2016 Google Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/google/bigtable/v1/bigtable_service_messages.proto b/google/bigtable/v1/bigtable_service_messages.proto
index f0db68941..0332bc9db 100644
--- a/google/bigtable/v1/bigtable_service_messages.proto
+++ b/google/bigtable/v1/bigtable_service_messages.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, Google Inc.
+// Copyright 2016 Google Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.