diff --git a/README_zh.md b/README_zh.md
index 199fee7ca..09558e7ed 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -144,8 +144,8 @@ Certimate 遵循 [MIT License](https://opensource.org/licenses/MIT) 开源协议
 
 <a href="https://www.star-history.com/?repos=certimate-go%2Fcertimate&type=date&legend=bottom-right">
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