diff --git a/test/images/node-perf/npb-is/Dockerfile b/test/images/node-perf/npb-is/Dockerfile
index fab764b3252..0acb792b450 100644
--- a/test/images/node-perf/npb-is/Dockerfile
+++ b/test/images/node-perf/npb-is/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2018 The Kubernetes Authors.
+# Copyright 2021 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.