diff --git a/src/models/shop/ShopActivity.ts b/src/models/shop/ShopActivity.ts
index 7d2f044..5e25ec1 100644
--- a/src/models/shop/ShopActivity.ts
+++ b/src/models/shop/ShopActivity.ts
@@ -9,6 +9,8 @@ import { noJson } from '../../decorators/nojson'
 import { Severity } from '@typegoose/typegoose/lib/internal/constants'
 
 export class ActivityRewardClass {
+  @prop()
+  public id: number
   @prop()
   public rank: number