diff --git a/bookwyrm/activitypub/base_activity.py b/bookwyrm/activitypub/base_activity.py
index 615db440a..f7f4b216c 100644
--- a/bookwyrm/activitypub/base_activity.py
+++ b/bookwyrm/activitypub/base_activity.py
@@ -73,7 +73,7 @@ class ActivityObject:
     def __init__(
         self,
         activity_objects: Optional[list[str, base_model.BookWyrmModel]] = None,
-        **kwargs: dict[str, Any],
+        **kwargs: Any,
     ):
         """this lets you pass in an object with fields that aren't in the
         dataclass, which it ignores. Any field in the dataclass is required or