diff --git a/README.md b/README.md
index bb5b696..aaaf968 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[![.NET](https://github.com/aimenux/JsonPolymorphicDemo/actions/workflows/ci.yml/badge.svg)](https://github.com/aimenux/JsonPolymorphicDemo/actions/workflows/ci.yml)
+[![.NET](https://github.com/aimenux/JsonPolymorphicDemo/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/aimenux/JsonPolymorphicDemo/actions/workflows/ci.yml)
 
 # JsonPolymorphicDemo
 ```