[LICENSE] Copyright -> SPDX-FileCopyrightText:
diff --git a/utils/drc-def-sky130A.sh b/utils/drc-def-sky130A.sh
index c894ad0..671b14a 100644
--- a/utils/drc-def-sky130A.sh
+++ b/utils/drc-def-sky130A.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# Copyright 2020 Efabless Corporation
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.