diff --git a/README.md b/README.md
index 42eeb1d..bb56f0d 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@
 <a href="https://d.a4.io/tsileo/microblog.pub"><img src="https://d.a4.io/api/badges/tsileo/microblog.pub/status.svg" alt="Build Status"></a>
 <a href="https://matrix.to/#/#microblog.pub:matrix.org"><img src="https://img.shields.io/badge/matrix-%23microblog.pub-blue.svg" alt="#microblog.pub on Matrix"></a>
 <a href="https://github.com/tsileo/microblog.pub/blob/master/LICENSE"><img src="https://img.shields.io/badge/license-AGPL_3.0-blue.svg?style=flat" alt="License"></a>
+<a href="https://github.com/ambv/black"><img alt="Code style: black" src="https://img.shields.io/badge/code%20style-black-000000.svg"></a>
 </p>