diff --git a/projects/zlib/build.sh b/projects/zlib/build.sh
index 197bf12a8..9b5879558 100755
--- a/projects/zlib/build.sh
+++ b/projects/zlib/build.sh
@@ -1,5 +1,5 @@
 #!/bin/bash -eu
-# Copyright 2020 Google Inc.
+# Copyright 2016 Google Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.