diff --git a/LICENSE.txt b/LICENSE.txt
index 5fa8f17..79a14bf 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,5 +1,5 @@
 The MIT License (MIT)
-Copyright (c) 2019-2020 YOCKOW
+Copyright (c) 2019-2024 YOCKOW
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software
 and associated documentation files (the "Software"), to deal in the Software without restriction,