diff --git a/compose/ponsim_onu.yml b/compose/ponsim_onu.yml
index 216df56..7b6e30b 100644
--- a/compose/ponsim_onu.yml
+++ b/compose/ponsim_onu.yml
@@ -1,4 +1,5 @@
 ---
+# Copyright 2018-2023 Open Networking Foundation (ONF) and the ONF Contributors
 # Copyright 2018 the original author or authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");