diff --git a/variables/variables.py b/variables/variables.py
index 5f946f1..f35e7cd 100755
--- a/variables/variables.py
+++ b/variables/variables.py
@@ -1,4 +1,4 @@
-# Copyright 2020-2022 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2020-2024 Open Networking Foundation (ONF) and the ONF Contributors
 # delivered by ADTRAN, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/variables/variables.robot b/variables/variables.robot
index be1aafe..d74f07b 100644
--- a/variables/variables.robot
+++ b/variables/variables.robot
@@ -1,4 +1,4 @@
-# Copyright 2017-2022 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2017-2024 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.