diff --git a/license.txt b/license.txt
index d9b72b5..d7ff816 100644
--- a/license.txt
+++ b/license.txt
@@ -1,4 +1,4 @@
-Double Opt-In Helper WordPress Plugin, 2021-2022 Takayuki Miyoshi
+Double Opt-In Helper WordPress Plugin, 2021-2023 Takayuki Miyoshi
 Double Opt-In Helper is distributed under the terms of the GNU GPL
 
 This program is free software; you can redistribute it and/or modify