diff --git a/bookwyrm/activitypub/book.py b/bookwyrm/activitypub/book.py
index 538fa571..c5b896e3 100644
--- a/bookwyrm/activitypub/book.py
+++ b/bookwyrm/activitypub/book.py
@@ -65,6 +65,7 @@ class Author(ActivityObject):
     """ author of a book """
 
     name: str
+    lastEditedBy: str = None
     born: str = None
     died: str = None
     aliases: List[str] = field(default_factory=lambda: [])
diff --git a/bookwyrm/models/activitypub_mixin.py b/bookwyrm/models/activitypub_mixin.py
index 71e02082..82a45ac8 100644
--- a/bookwyrm/models/activitypub_mixin.py
+++ b/bookwyrm/models/activitypub_mixin.py
@@ -153,9 +153,13 @@ class ActivitypubMixin:
         # unless it's a dm, all the followers should receive the activity
         if privacy != "direct":
             # we will send this out to a subset of all remote users
-            queryset = user_model.viewer_aware_objects(user).filter(
-                local=False,
-            ).distinct()
+            queryset = (
+                user_model.viewer_aware_objects(user)
+                .filter(
+                    local=False,
+                )
+                .distinct()
+            )
             # filter users first by whether they're using the desired software
             # this lets us send book updates only to other bw servers
             if software: