diff --git a/lib/tasks/clear_data.rake b/lib/tasks/clear_data.rake
index cd4fec49..6e556c52 100755
--- a/lib/tasks/clear_data.rake
+++ b/lib/tasks/clear_data.rake
@@ -20,6 +20,9 @@ namespace :clear do
     SeedGenerator.where("id > 1").update(:current => 0, :next => 0)
     Receipt.delete_all
     ReceiptDetail.delete_all
+    OrderReservation.delete_all
+    OrderReservationItem.delete_all
+    Delivery.delete_all
     puts "Clear Data Done."
   end