diff --git a/radicale/__main__.py b/radicale/__main__.py
index 111f47b..cd3cf6c 100644
--- a/radicale/__main__.py
+++ b/radicale/__main__.py
@@ -32,9 +32,8 @@ import ssl
 import sys
 from wsgiref.simple_server import make_server
 
-from . import (
-    VERSION, Application, RequestHandler, ThreadedHTTPServer,
-    ThreadedHTTPSServer, config, log)
+from . import (VERSION, Application, RequestHandler, ThreadedHTTPServer,
+               ThreadedHTTPSServer, config, log)
 
 
 def run():
diff --git a/radicale/tests/test_auth.py b/radicale/tests/test_auth.py
index dc0fadd..fd3bc6f 100644
--- a/radicale/tests/test_auth.py
+++ b/radicale/tests/test_auth.py
@@ -26,6 +26,7 @@ import shutil
 import tempfile
 
 import pytest
+
 from radicale import Application, config
 
 from .test_base import BaseTest
diff --git a/radicale/tests/test_base.py b/radicale/tests/test_base.py
index b8ceb84..e18ed17 100644
--- a/radicale/tests/test_base.py
+++ b/radicale/tests/test_base.py
@@ -26,6 +26,7 @@ import shutil
 import tempfile
 
 import pytest
+
 from radicale import Application, config
 
 from . import BaseTest