diff --git a/jupyter_server_proxy/standalone/__init__.py b/jupyter_server_proxy/standalone/__init__.py
index 199b1f05..93ad90ac 100644
--- a/jupyter_server_proxy/standalone/__init__.py
+++ b/jupyter_server_proxy/standalone/__init__.py
@@ -1,4 +1,6 @@
-from __future__ import annotations  # Allows type subscripts (like tuple[str, int]) in Python 3.8
+from __future__ import (
+    annotations,  # Allows type subscripts (like tuple[str, int]) in Python 3.8
+)
 
 import argparse
 import logging
diff --git a/jupyter_server_proxy/standalone/proxy.py b/jupyter_server_proxy/standalone/proxy.py
index 22fc3660..fdc1cb98 100644
--- a/jupyter_server_proxy/standalone/proxy.py
+++ b/jupyter_server_proxy/standalone/proxy.py
@@ -1,4 +1,6 @@
-from __future__ import annotations  # Allows type subscripts (like tuple[str, int]) in Python 3.8
+from __future__ import (
+    annotations,  # Allows type subscripts (like tuple[str, int]) in Python 3.8
+)
 
 import os
 import re