diff --git a/LICENSE.md b/LICENSE.md
index ecb9b3e..86a39e9 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,4 +1,4 @@
-Copyright 2022 mintsuki and contributors.
+Copyright (C) 2022-2023 mintsuki and contributors.
 
 Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.