1 files changed, 6 insertions, 2 deletions
diff --git a/app/serializers/activitypub/note_serializer.rb b/app/serializers/activitypub/note_serializer.rb
index 163f25560..b86ab932e 100644
--- a/app/serializers/activitypub/note_serializer.rb
+++ b/app/serializers/activitypub/note_serializer.rb
@@ -3,7 +3,7 @@
 class ActivityPub::NoteSerializer < ActivityPub::Serializer
   context_extensions :atom_uri, :conversation, :sensitive, :voters_count, :direct_message
 
-  context_extensions :edited, :server_metadata
+  context_extensions :edited, :server_metadata, :root
 
   attributes :id, :type, :summary,
              :in_reply_to, :published, :url,
@@ -11,7 +11,7 @@ class ActivityPub::NoteSerializer < ActivityPub::Serializer
              :atom_uri, :in_reply_to_atom_uri,
              :conversation
 
-  attribute :updated
+  attributes :updated, :root
   attribute :title, key: :name, if: :title_present?
 
   attribute :content
@@ -50,6 +50,10 @@ class ActivityPub::NoteSerializer < ActivityPub::Serializer
     end
   end
 
+  def root
+    object.conversation&.root
+  end
+
   def summary
     return Formatter.instance.format(object) if title_present?