diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 2a68ff6..1df1886 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -70,11 +70,11 @@ Ready to contribute? Here's how to set up `cached-property` for local developmen
 
     Now you can make your changes locally.
 
-5. Clean up the formatting (must be running at least Python 3.6):
+5. Clean up the formatting (must be running at least Python 3.8):
 
     ```bash
-    $ pip install -U black
-    $ black .
+    $ pip install -U ruff
+    $ ruff format .
     ```
 
 6. When you're done making changes, check that your changes pass the tests, including testing other Python versions with tox:
diff --git a/README.md b/README.md
index b47bc6a..cc2b5b2 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![Github Actions status](https://github.com/pydanny/cached-property/workflows/Python%20package/badge.svg)](https://github.com/pydanny/cached-property/actions)
 [![PyPI](https://img.shields.io/pypi/v/cached-property.svg)](https://pypi.python.org/pypi/cached-property)
-[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/ambv/black)
+[![Code style: ruff](https://img.shields.io/badge/code%20style-ruff-000000.svg)](https://github.com/astral-sh/ruff)
 
 A decorator for caching properties in classes.
 
diff --git a/setup.py b/setup.py
index 4d08b9b..dd58d17 100755
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,7 @@ def read(fname):
     try:
         import wheel
         import twine
-    except: # Yes, this is not how we usually do try/except
+    except:  # Yes, this is not how we usually do try/except
         raise ImportError('Run "pip install wheel twine"')
     os.system("python setup.py sdist bdist_wheel")
     os.system("twine upload dist/*")
diff --git a/tests/test_async_cached_property.py b/tests/test_async_cached_property.py
index e03ac82..24e1f79 100644
--- a/tests/test_async_cached_property.py
+++ b/tests/test_async_cached_property.py
@@ -18,7 +18,7 @@ def __init__(self):
             self.cached_total = 0
             self.lock = Lock()
 
-        async def add_control(self): # noqa
+        async def add_control(self):  # noqa
             self.control_total += 1
             return self.control_total