diff --git a/maxkey-core/src/test/java/org/maxkey/copyright.txt b/maxkey-core/src/test/java/org/maxkey/copyright.txt
index 0f731ef9..9759194f 100644
--- a/maxkey-core/src/test/java/org/maxkey/copyright.txt
+++ b/maxkey-core/src/test/java/org/maxkey/copyright.txt
@@ -1,5 +1,5 @@
 /*
- * Copyright [2020] [MaxKey of copyright http://www.maxkey.top]
+ * Copyright [2021] [MaxKey of copyright http://www.maxkey.top]
  * 
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.