diff --git a/.github/workflows/check.yml b/.github/workflows/check.yaml
similarity index 100%
rename from .github/workflows/check.yml
rename to .github/workflows/check.yaml
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yaml
similarity index 100%
rename from .github/workflows/release.yml
rename to .github/workflows/release.yaml
diff --git a/README.md b/README.md
index d33675a5c..53c155253 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ versions](https://img.shields.io/pypi/pyversions/tox.svg)](https://pypi.org/proj
 [![Downloads](https://static.pepy.tech/badge/tox/month)](https://pepy.tech/project/tox)
 [![Documentation
 status](https://readthedocs.org/projects/tox/badge/?version=latest)](https://tox.readthedocs.io/en/latest/?badge=latest)
-[![check](https://github.com/tox-dev/tox/actions/workflows/check.yml/badge.svg)](https://github.com/tox-dev/tox/actions/workflows/check.yml)
+[![check](https://github.com/tox-dev/tox/actions/workflows/check.yaml/badge.svg)](https://github.com/tox-dev/tox/actions/workflows/check.yaml)
 
 `tox` aims to automate and standardize testing in Python. It is part of a larger vision of easing the packaging, testing
 and release process of Python software (alongside [pytest](https://docs.pytest.org/en/latest/) and