diff --git a/tools/dockerfile/interoptest/grpc_interop_php8/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_php8/Dockerfile
index 60d2121747e86..f27c0562e07b9 100644
--- a/tools/dockerfile/interoptest/grpc_interop_php8/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_php8/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2016 gRPC authors.
+# Copyright 2026 gRPC authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.