diff --git a/forum/settings.py b/forum/settings.py
index 52a2197cf..95255762e 100644
--- a/forum/settings.py
+++ b/forum/settings.py
@@ -29,11 +29,11 @@
 DEBUG = True
 
 ALLOWED_HOSTS = [
-    'localhost',
-    '127.0.0.1',
-    '[::1]',
-    '0.0.0.0',
-    config('ALLOWED_ENV_HOST'),
+    "localhost",
+    "127.0.0.1",
+    "[::1]",
+    "0.0.0.0",
+    config("ALLOWED_ENV_HOST"),
 ]
 
 # Application definition