diff --git a/utils/semver b/utils/semver
index 5b25f40ba48c..e9d092d94446 100755
--- a/utils/semver
+++ b/utils/semver
@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# SPDX-License-Identifier: Apache-2.0
+# https://github.com/fsaintjacques/semver-tool
+
 set -o errexit -o nounset -o pipefail
 
 NAT='0|[1-9][0-9]*'