diff --git a/README.md b/README.md
index 4f2c0fa..c8afcd5 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 [![Python versions](https://img.shields.io/pypi/pyversions/cachetory?logo=python&logoColor=yellow)](https://pypi.org/project/cachetory/)
 [![Checks](https://img.shields.io/github/actions/workflow/status/kpn/cachetory/check.yml?label=checks&logo=github)](https://github.com/kpn/cachetory/actions/workflows/check.yml)
 [![Coverage](https://codecov.io/gh/kpn/cachetory/branch/main/graph/badge.svg?token=UNYTTvxiWk)](https://codecov.io/gh/kpn/cachetory)
-[![Code style](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/kpn/cachetory)
+![Code style](https://img.shields.io/badge/code%20style-ruff-000000.svg)
 
 ## Documentation