[LICENSE] Copyright -> SPDX-FileCopyrightText:
diff --git a/utils/addmpwseal.tcl b/utils/addmpwseal.tcl
index 7473760..b562f93 100644
--- a/utils/addmpwseal.tcl
+++ b/utils/addmpwseal.tcl
@@ -1,4 +1,4 @@
-# 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.