diff --git a/packages/google-cloud-oslogin/protos/google/cloud/oslogin/common/common.proto b/packages/google-cloud-oslogin/protos/google/cloud/oslogin/common/common.proto
index c0a15cc71fd..966eb3252ba 100644
--- a/packages/google-cloud-oslogin/protos/google/cloud/oslogin/common/common.proto
+++ b/packages/google-cloud-oslogin/protos/google/cloud/oslogin/common/common.proto
@@ -1,4 +1,4 @@
-// Copyright 2023 Google LLC
+// Copyright 2024 Google LLC
 //
 // 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/packages/google-cloud-oslogin/protos/google/cloud/oslogin/v1/oslogin.proto b/packages/google-cloud-oslogin/protos/google/cloud/oslogin/v1/oslogin.proto
index 7a63ca6db80..b1641315162 100644
--- a/packages/google-cloud-oslogin/protos/google/cloud/oslogin/v1/oslogin.proto
+++ b/packages/google-cloud-oslogin/protos/google/cloud/oslogin/v1/oslogin.proto
@@ -1,4 +1,4 @@
-// Copyright 2023 Google LLC
+// Copyright 2024 Google LLC
 //
 // 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/packages/google-cloud-oslogin/protos/google/cloud/oslogin/v1beta/oslogin.proto b/packages/google-cloud-oslogin/protos/google/cloud/oslogin/v1beta/oslogin.proto
index a49b7df4424..e40632f519b 100644
--- a/packages/google-cloud-oslogin/protos/google/cloud/oslogin/v1beta/oslogin.proto
+++ b/packages/google-cloud-oslogin/protos/google/cloud/oslogin/v1beta/oslogin.proto
@@ -1,4 +1,4 @@
-// Copyright 2023 Google LLC
+// Copyright 2024 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.