diff --git a/bookwyrm/activitypub/response.py b/bookwyrm/activitypub/response.py
index a3c699b9..07f39c7e 100644
--- a/bookwyrm/activitypub/response.py
+++ b/bookwyrm/activitypub/response.py
@@ -2,6 +2,7 @@ from django.http import JsonResponse
 
 from .base_activity import ActivityEncoder
 
+
 class ActivitypubResponse(JsonResponse):
     """
     A class to be used in any place that's serializing responses for