diff --git a/README.md b/README.md
index 199fbe1..616f9f0 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ Small C++ header to display async counters and progress bars. Use it by
 including `meanwhile.h` in your project.
 
 [![build](https://github.com/oir/meanwhile/actions/workflows/build-test.yml/badge.svg)](https://github.com/oir/meanwhile/actions/workflows/build-test.yml)
+[![Coverage Status](https://coveralls.io/repos/github/oir/meanwhile/badge.svg?branch=main)](https://coveralls.io/github/oir/meanwhile?branch=main)
 
 ---