diff --git a/spec/models/conversation_spec.rb b/spec/models/conversation_spec.rb
index 0ca7303ef..ce7b92028 100644
--- a/spec/models/conversation_spec.rb
+++ b/spec/models/conversation_spec.rb
@@ -525,6 +525,7 @@ RSpec.describe Conversation do
         id: conversation.display_id,
         messages: [],
         labels: [],
+        last_activity_at: conversation.last_activity_at.to_i,
         inbox_id: conversation.inbox_id,
         status: conversation.status,
         contact_inbox: conversation.contact_inbox,