1 files changed, 2 insertions, 3 deletions
diff --git a/Makefile b/Makefile
index 1baedcb..aad6cd3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,5 @@
-## Copyright 2021, Shulhan <ms@kilabit.info>. All rights reserved.
-## Use of this source code is governed by a BSD-style
-## license that can be found in the LICENSE file.
+## SPDX-FileCopyrightText: 2021 M. Shulhan <ms@kilabit.info>
+## SPDX-License-Identifier: GPL-3.0-or-later
 
 .PHONY: all dev