diff --git a/README.md b/README.md
index 4c201685..0e0c7d40 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 [![Build Status](https://github.com/monkeyWie/gopeed-core/workflows/build/badge.svg)](https://github.com/monkeyWie/gopeed-core/actions?query=workflow%3Abuild)
-[![Codecov](https://codecov.io/gh/monkeyWie/gopeed-core/branch/master/graph/badge.svg)](https://codecov.io/gh/monkeyWie/gopeed-core)
+[![Codecov](https://codecov.io/gh/monkeyWie/gopeed-core/branch/dev/graph/badge.svg)](https://codecov.io/gh/monkeyWie/gopeed-core)
 
 ## gopeed