diff --git a/cachecontrol/__init__.py b/cachecontrol/__init__.py
index 82646f37..4fd76a44 100644
--- a/cachecontrol/__init__.py
+++ b/cachecontrol/__init__.py
@@ -6,6 +6,7 @@
 
 Make it easy to import from cachecontrol without long namespaces.
 """
+
 __author__ = "Eric Larson"
 __email__ = "eric@ionrock.org"
 __version__ = "0.14.0"
diff --git a/cachecontrol/cache.py b/cachecontrol/cache.py
index 3293b005..91598e92 100644
--- a/cachecontrol/cache.py
+++ b/cachecontrol/cache.py
@@ -6,6 +6,7 @@
 The cache object API for implementing caches. The default is a thread
 safe in-memory dictionary.
 """
+
 from __future__ import annotations
 
 from threading import Lock
diff --git a/cachecontrol/controller.py b/cachecontrol/controller.py
index 70414be3..f826aec0 100644
--- a/cachecontrol/controller.py
+++ b/cachecontrol/controller.py
@@ -5,6 +5,7 @@
 """
 The httplib2 algorithms ported for use with requests.
 """
+
 from __future__ import annotations
 
 import calendar
diff --git a/cachecontrol/heuristics.py b/cachecontrol/heuristics.py
index ea1badca..f64444f8 100644
--- a/cachecontrol/heuristics.py
+++ b/cachecontrol/heuristics.py
@@ -68,7 +68,9 @@ def update_headers(self, response: HTTPResponse) -> dict[str, str]:
 
         if "expires" not in response.headers:
             date = parsedate(response.headers["date"])
-            expires = expire_after(timedelta(days=1), date=datetime(*date[:6], tzinfo=timezone.utc))  # type: ignore[index,misc]
+            expires = expire_after(
+                timedelta(days=1), date=datetime(*date[:6], tzinfo=timezone.utc)
+            )  # type: ignore[index,misc]
             headers["expires"] = datetime_to_header(expires)
             headers["cache-control"] = "public"
         return headers
diff --git a/tests/test_cache_control.py b/tests/test_cache_control.py
index 8f0b8f33..f77b4ddc 100644
--- a/tests/test_cache_control.py
+++ b/tests/test_cache_control.py
@@ -5,6 +5,7 @@
 """
 Unit tests that verify our caching methods work correctly.
 """
+
 import time
 from tempfile import mkdtemp
 from unittest.mock import ANY, Mock
diff --git a/tests/test_redirects.py b/tests/test_redirects.py
index a37bb2b2..9d6932b2 100644
--- a/tests/test_redirects.py
+++ b/tests/test_redirects.py
@@ -5,6 +5,7 @@
 """
 Test for supporting redirect caches as needed.
 """
+
 import requests
 
 from cachecontrol import CacheControl
diff --git a/tests/test_storage_filecache.py b/tests/test_storage_filecache.py
index d9dd2419..df74a3bd 100644
--- a/tests/test_storage_filecache.py
+++ b/tests/test_storage_filecache.py
@@ -5,6 +5,7 @@
 """
 Unit tests that verify FileCache storage works correctly.
 """
+
 import os
 import string