diff --git a/LICENSE b/LICENSE
index 5694a9a..a285436 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019-2020 Naoto Kondo
+Copyright (c) 2019-2022 Naoto Kondo
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal