diff --git a/docs/README.md b/docs/README.md
index 9778ab3c..8045f85d 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -4,6 +4,7 @@
 [![PyPI - Version](https://img.shields.io/pypi/v/wireviz.svg?colorB=blue)](https://pypi.org/project/wireviz/)
 [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/wireviz.svg?)](https://pypi.org/project/wireviz/)
 [![PyPI - Downloads](https://img.shields.io/pypi/dm/wireviz)](https://pypi.org/project/wireviz/)
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 
 ## Summary