diff --git a/variables/variables.py b/variables/variables.py
index b827f14..5f946f1 100755
--- a/variables/variables.py
+++ b/variables/variables.py
@@ -1,4 +1,4 @@
-# Copyright 2020 Open Networking Foundation
+# Copyright 2020-2022 Open Networking Foundation (ONF) and the ONF Contributors
 # delivered by ADTRAN, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -24,4 +24,3 @@
         'example_variable': 'this is an example, how add a (dynamic) variable to robotframework'
     }
     return variables
-    
\ No newline at end of file