diff --git a/README.md b/README.md
index 77ff024..a480f29 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![License](http://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/uutils/sed/blob/main/LICENSE)
 [![dependency status](https://deps.rs/repo/github/uutils/sed/status.svg)](https://deps.rs/repo/github/uutils/sed)
 
-[![CodeCov](https://codecov.io/gh/uutils/sed/branch/master/graph/badge.svg)](https://codecov.io/gh/uutils/sed)
+[![CodeCov](https://codecov.io/gh/uutils/sed/branch/main/graph/badge.svg)](https://codecov.io/gh/uutils/sed)
 
 # sed