diff --git a/README.md b/README.md
index d0aa10b..3627dee 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # optika
 
 [![tests](https://github.com/byrdie/optika/actions/workflows/tests.yml/badge.svg)](https://github.com/byrdie/optika/actions/workflows/tests.yml)
+[![codecov](https://codecov.io/gh/byrdie/optika/graph/badge.svg?token=P91YBOT47O)](https://codecov.io/gh/byrdie/optika)
 [![Black](https://github.com/byrdie/optika/actions/workflows/black.yml/badge.svg)](https://github.com/byrdie/optika/actions/workflows/black.yml)
 [![Documentation Status](https://readthedocs.org/projects/optika/badge/?version=latest)](https://optika.readthedocs.io/en/latest/?badge=latest)
 [![PyPI version](https://badge.fury.io/py/optika.svg)](https://badge.fury.io/py/optika)