diff --git a/README.md b/README.md
index d9b636a51094994d7ae5d76a700fd38b76c5f1ba..832c1b081cbe13685ec8d8e5e09ec52b7888849e 100644
--- a/README.md
+++ b/README.md
@@ -177,7 +177,7 @@
 
 ## 开源许可协议
 
-Copyright (2018-2019) <a href="https://www.chatopera.com/" target="_blank">北京华夏春松科技有限公司</a>
+Copyright (2018-2020) <a href="https://www.chatopera.com/" target="_blank">北京华夏春松科技有限公司</a>
 
 [Apache License Version 2.0](https://github.com/chatopera/cosin/blob/master/LICENSE)