diff --git a/assets/download.md b/assets/download.md
index 35f71b21..0b704873 100644
--- a/assets/download.md
+++ b/assets/download.md
@@ -30,5 +30,5 @@
 
 离线版本由公众号 **CyC2018** 发布，最新版本也会在上面及时发布，在公众号后台回复 **离线下载** 即可获取下载链接。
 
-<div align="center"><img width="320px" src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/other/公众号海报.png"></img></div>
+<div align="center"><img width="320px" src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/other/公众号海报.png?v=1"></img></div>