diff --git a/cmake/get_cpm.cmake b/cmake/get_cpm.cmake
index ed160de3..94f69312 100644
--- a/cmake/get_cpm.cmake
+++ b/cmake/get_cpm.cmake
@@ -1,3 +1,7 @@
+# SPDX-License-Identifier: MIT
+#
+# SPDX-FileCopyrightText: Copyright (c) 2019-2022 Lars Melchior and contributors
+
 set(CPM_DOWNLOAD_VERSION 1.0.0-development-version)
 
 if(CPM_SOURCE_CACHE)