diff --git a/thirdparty/zlib/CMakeLists.txt b/thirdparty/zlib/CMakeLists.txt
index b24d4abf323..33b9222ec53 100644
--- a/thirdparty/zlib/CMakeLists.txt
+++ b/thirdparty/zlib/CMakeLists.txt
@@ -1,3 +1,7 @@
+# Copyright (C) 2018-2021 Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+#
+
 PROJECT(zlib)
 
 if(NOT WIN32)