diff --git a/protos/voltha_protos/ext_config.proto b/protos/voltha_protos/ext_config.proto
index dc33120..ce8ac25 100755
--- a/protos/voltha_protos/ext_config.proto
+++ b/protos/voltha_protos/ext_config.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Open Networking Foundation
+// Copyright 2020-2024 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/protos/voltha_protos/extensions.proto b/protos/voltha_protos/extensions.proto
index aa17eac..1f232ec 100755
--- a/protos/voltha_protos/extensions.proto
+++ b/protos/voltha_protos/extensions.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2018 Open Networking Foundation
+// Copyright 2018-2024 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/protos/voltha_protos/openflow_13.proto b/protos/voltha_protos/openflow_13.proto
index 069269d..5b95aac 100755
--- a/protos/voltha_protos/openflow_13.proto
+++ b/protos/voltha_protos/openflow_13.proto
@@ -1,6 +1,6 @@
 /* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
  * Junior University
- * Copyright (c) 2011, 2012 Open Networking Foundation
+ * Copyright 2011-2024 Open Networking Foundation (ONF) and the ONF Contributors
  *
  * We are making the OpenFlow specification and associated documentation
  * (Software) available for public use and benefit with the expectation
diff --git a/protos/voltha_protos/openolt.proto b/protos/voltha_protos/openolt.proto
index 755c706..3fcd2af 100755
--- a/protos/voltha_protos/openolt.proto
+++ b/protos/voltha_protos/openolt.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2018 Open Networking Foundation
+// Copyright 2018-2024 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/protos/voltha_protos/tech_profile.proto b/protos/voltha_protos/tech_profile.proto
index 252dbd3..c82d52f 100755
--- a/protos/voltha_protos/tech_profile.proto
+++ b/protos/voltha_protos/tech_profile.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2018 Open Networking Foundation
+// Copyright 2018-2024 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/protos/voltha_protos/voip_system_profile.proto b/protos/voltha_protos/voip_system_profile.proto
index 814b086..ec086be 100644
--- a/protos/voltha_protos/voip_system_profile.proto
+++ b/protos/voltha_protos/voip_system_profile.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2018 Open Networking Foundation
+// Copyright 2018-2024 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/protos/voltha_protos/voip_user_profile.proto b/protos/voltha_protos/voip_user_profile.proto
index b5a48e5..dbd3eb1 100644
--- a/protos/voltha_protos/voip_user_profile.proto
+++ b/protos/voltha_protos/voip_user_profile.proto
@@ -1,4 +1,4 @@
-// Copyright (c) 2018 Open Networking Foundation
+// Copyright 2018-2024 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.