diff --git a/include/mruby.h b/include/mruby.h
index 8e9c3dd7b..2c95a0656 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -1,7 +1,7 @@
 /*
 ** mruby - An embeddable Ruby implementation
 **
-** Copyright (c) mruby developers 2010-2021
+** Copyright (c) mruby developers 2010-2022
 **
 ** Permission is hereby granted, free of charge, to any person obtaining
 ** a copy of this software and associated documentation files (the