diff --git a/makefiles/jjb/help.mk b/makefiles/jjb/help.mk
index 331c68a..58f30ae 100644
--- a/makefiles/jjb/help.mk
+++ b/makefiles/jjb/help.mk
@@ -1,6 +1,6 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2022-2024 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.
diff --git a/makefiles/jjb/include.mk b/makefiles/jjb/include.mk
index 90121dc..7af018c 100644
--- a/makefiles/jjb/include.mk
+++ b/makefiles/jjb/include.mk
@@ -1,6 +1,6 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2022-2024 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.
diff --git a/makefiles/jjb/required.mk b/makefiles/jjb/required.mk
index 17371e9..3cb43bb 100644
--- a/makefiles/jjb/required.mk
+++ b/makefiles/jjb/required.mk
@@ -1,6 +1,6 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2022-2024 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.
diff --git a/makefiles/jjb/targets.mk b/makefiles/jjb/targets.mk
index 17fc78f..e1c2c9b 100644
--- a/makefiles/jjb/targets.mk
+++ b/makefiles/jjb/targets.mk
@@ -1,6 +1,6 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2022-2024 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.