diff --git a/app/controllers/api/v1/accounts/contacts/conversations_controller.rb b/app/controllers/api/v1/accounts/contacts/conversations_controller.rb
index 5e0a0e55e..de0ac4db9 100644
--- a/app/controllers/api/v1/accounts/contacts/conversations_controller.rb
+++ b/app/controllers/api/v1/accounts/contacts/conversations_controller.rb
@@ -2,7 +2,7 @@ class Api::V1::Accounts::Contacts::ConversationsController < Api::V1::Accounts::
   def index
     @conversations = Current.account.conversations.includes(
       :assignee, :contact, :inbox, :taggings
-    ).where(inbox_id: inbox_ids, contact_id: @contact.id).order(id: :desc).limit(20)
+    ).where(inbox_id: inbox_ids, contact_id: @contact.id).order(last_activity_at: :desc).limit(20)
   end
 
   private