diff --git a/README.md b/README.md
index 2de869d..aa8eec3 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # MiPAC
 
 <a href="https://discord.gg/CcT997U"><img src="https://img.shields.io/discord/530299114387406860?style=flat-square&color=5865f2&logo=discord&logoColor=ffffff&label=discord" alt="Discord server invite" /></a>
-<a href="https://github.com/psf/black"><img src="https://img.shields.io/badge/code%20style-black-000000.svg" /></a>
+[![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
 <a href="https://www.codacy.com/gh/yupix/MiPAC/dashboard?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=yupix/MiPAC&amp;utm_campaign=Badge_Grade"><img src="https://app.codacy.com/project/badge/Grade/c9bf85f195f94ab58bc72ad018a2be9f"/></a>
 <a href="https://app.fossa.com/projects/git%2Bgithub.com%2Fyupix%2FMiPAC?
 ref=badge_shield" alt="FOSSA Status">
diff --git a/README_JP.md b/README_JP.md
index b43f25a..2d5e6d6 100644
--- a/README_JP.md
+++ b/README_JP.md
@@ -1,7 +1,7 @@
 # MiPAC
 
 <a href="https://discord.gg/CcT997U"><img src="https://img.shields.io/discord/530299114387406860?style=flat-square&color=5865f2&logo=discord&logoColor=ffffff&label=discord" alt="Discord server invite" /></a>
-<a href="https://github.com/psf/black"><img src="https://img.shields.io/badge/code%20style-black-000000.svg" /></a>
+[![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
 <a href="https://www.codacy.com/gh/yupix/MiPAC/dashboard?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=yupix/MiPAC&amp;utm_campaign=Badge_Grade"><img src="https://app.codacy.com/project/badge/Grade/c9bf85f195f94ab58bc72ad018a2be9f"/></a>
 <a href="https://app.fossa.com/projects/git%2Bgithub.com%2Fyupix%2FMiPAC?
 ref=badge_shield" alt="FOSSA Status">
diff --git a/pyproject.toml b/pyproject.toml
index cde840d..0561d41 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,5 +19,8 @@ build-backend = "setuptools.build_meta"
 [tool.ruff]
 line-length = 99
 
+[tool.ruff.format]
+exclude = ["mipac/_version.py"]
+
 [tool.ruff.per-file-ignores]
 "__init__.py" = ["E402", "F403"]
diff --git a/setup.py b/setup.py
index 2ecb2ba..cd3b597 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@ with open('requirements.txt', 'r') as f:
     requirements = f.read().splitlines()
 
 extras_require = {
-    'dev': ['black', 'isort', 'mypy', 'flake8', 'pre-commit', 'ruff'],
+    'dev': ['isort', 'mypy', 'flake8', 'pre-commit', 'ruff'],
     'ci': ['flake8', 'mypy', 'ruff'],
     'speed': ['orjson'],
     'doc': ['sphinx', 'furo', 'sphinxcontrib_trio', 'sphinx-intl', 'numpydoc'],