diff --git a/README.md b/README.md
index c9e8892..1c5693c 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 </p>
 
 <p align="center">
-    <img src ="https://img.shields.io/badge/version-2021.4.21.2-blueviolet.svg"/>
+    <img src ="https://img.shields.io/badge/version-2021.4.21.5-blueviolet.svg"/>
     <img src ="https://img.shields.io/badge/platform-windows|linux-yellow.svg"/>
     <img src ="https://img.shields.io/badge/python-3.7-blue.svg" />
     <img src ="https://img.shields.io/github/license/vnpy/vnpy.svg?color=orange"/>