diff --git a/.github/check_license.sh b/.github/check_license.sh
index 27e7bea8..29dfdfde 100755
--- a/.github/check_license.sh
+++ b/.github/check_license.sh
@@ -1,4 +1,11 @@
-#!/bin/bash
+#!/usr/bin/env bash
+# Copyright (C) 2017-2020  The Project X-Ray Authors.
+#
+# Use of this source code is governed by a ISC-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/ISC
+#
+# SPDX-License-Identifier: ISC
 
 echo
 echo "==========================="