diff --git a/app/api/endpoints/coupon_activity.py b/app/api/endpoints/coupon_activity.py
index 997d081..cf96a46 100644
--- a/app/api/endpoints/coupon_activity.py
+++ b/app/api/endpoints/coupon_activity.py
@@ -193,8 +193,8 @@ async def receive_coupons(
             coupon = db.query(CouponDB).filter(CouponDB.id == coupon_id).first()
             if coupon:
                 today = datetime.now().date()
-                #过期时间：30 天
-                expire_time = datetime.combine(today, datetime.max.time()) + timedelta(days=30)
+                #过期时间：15 天
+                expire_time = datetime.combine(today, datetime.max.time()) + timedelta(days=15)
                 manager = CouponManager(db)
                 manager.add_coupon(
                     user_id=current_user.userid,
diff --git a/jobs.sqlite b/jobs.sqlite
index 26d5ac0..362dd2c 100644
Binary files a/jobs.sqlite and b/jobs.sqlite differ