diff --git a/protos/Makefile b/protos/Makefile
index 0fbca86..09f92f0 100644
--- a/protos/Makefile
+++ b/protos/Makefile
@@ -1,4 +1,4 @@
-# Copyright (c) 2018 Open Networking Foundation
+# Copyright 2018-2023 Open Networking Foundation (ONF) and the ONF Contributors
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.