diff --git a/webapp/services/callback/ShopAddItemService.php b/webapp/services/callback/ShopAddItemService.php
index 5be0bc81..57d60e85 100644
--- a/webapp/services/callback/ShopAddItemService.php
+++ b/webapp/services/callback/ShopAddItemService.php
@@ -239,6 +239,14 @@ class ShopAddItemService
                     ));
                 }
                 break;
+            case V_ITEM_DIAMOND:
+                {
+                    $this->_updateUserInfo($conn,$accountId,array(
+                        'diamond' => function () use($itemNum) {
+                            return "diamond + ${itemNum}";
+                        }
+                    ));
+                }
             default:
                 {
                 }