diff --git a/LICENSE b/LICENSE
index e541f2c..7a68eeb 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2018 Asami Doi <d0iasm.pub@gmail.com>
+Copyright (c) 2020 Asami Doi <d0iasm.pub@gmail.com>
 
 Permission is hereby granted, free of charge, to any
 person obtaining a copy of this software and associated