diff --git a/api/src/main/java/org/opencord/igmpproxy/GroupMemberId.java b/api/src/main/java/org/opencord/igmpproxy/GroupMemberId.java
index 137a259..2507e55 100644
--- a/api/src/main/java/org/opencord/igmpproxy/GroupMemberId.java
+++ b/api/src/main/java/org/opencord/igmpproxy/GroupMemberId.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-present Open Networking Foundation
+ * Copyright 2017-2023 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.
diff --git a/api/src/main/java/org/opencord/igmpproxy/IgmpStatistics.java b/api/src/main/java/org/opencord/igmpproxy/IgmpStatistics.java
index 5617017..33cf949 100644
--- a/api/src/main/java/org/opencord/igmpproxy/IgmpStatistics.java
+++ b/api/src/main/java/org/opencord/igmpproxy/IgmpStatistics.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-present 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.
diff --git a/api/src/main/java/org/opencord/igmpproxy/statemachine/State.java b/api/src/main/java/org/opencord/igmpproxy/statemachine/State.java
index 022d509..f4283cb 100644
--- a/api/src/main/java/org/opencord/igmpproxy/statemachine/State.java
+++ b/api/src/main/java/org/opencord/igmpproxy/statemachine/State.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-present Open Networking Foundation
+ * Copyright 2017-2023 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.