diff --git a/google/bigtable/admin/table/v1/bigtable_table_data.proto b/google/bigtable/admin/table/v1/bigtable_table_data.proto
index 40072416..e4efb74f 100644
--- a/google/bigtable/admin/table/v1/bigtable_table_data.proto
+++ b/google/bigtable/admin/table/v1/bigtable_table_data.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, Google Inc.
+// Copyright 2017 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/admin/table/v1/bigtable_table_service.proto b/google/bigtable/admin/table/v1/bigtable_table_service.proto
index 69628627..6e968fee 100644
--- a/google/bigtable/admin/table/v1/bigtable_table_service.proto
+++ b/google/bigtable/admin/table/v1/bigtable_table_service.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, Google Inc.
+// Copyright 2017 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/admin/table/v1/bigtable_table_service_messages.proto b/google/bigtable/admin/table/v1/bigtable_table_service_messages.proto
index 7374dc9d..617ede65 100644
--- a/google/bigtable/admin/table/v1/bigtable_table_service_messages.proto
+++ b/google/bigtable/admin/table/v1/bigtable_table_service_messages.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, Google Inc.
+// Copyright 2017 Google Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.