diff --git a/app/models/activity_pub/activity.rb b/app/models/activity_pub/activity.rb
index a220b831..1147c5b8 100644
--- a/app/models/activity_pub/activity.rb
+++ b/app/models/activity_pub/activity.rb
@@ -16,7 +16,7 @@ class ActivityPub
     include ActivityPub::Concerns::JsonLdConcern
 
     belongs_to :activity_pub
-    belongs_to :actor
+    belongs_to :actor, touch: true
     has_one :object, through: :activity_pub
 
     validates :activity_pub_id, presence: true