diff --git a/README.md b/README.md
index e401449..5183b4c 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 ![Stage](https://img.shields.io/badge/stage-alpha-orange)
 ![Build](https://img.shields.io/github/actions/workflow/status/ephmo/ocma/deploy.yml)
+![Coverage](https://img.shields.io/badge/coverage-10%25-red)
 ![License](https://img.shields.io/github/license/ephmo/ocma)
 
 ## Contributing