diff --git a/LICENSE b/LICENSE
index 1b91ce5..6ca1a93 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright 2020 WANGFEIHU
+Copyright 2019-2020 WANGFEIHU
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.