diff --git a/back/src/wos/wos.service.ts b/back/src/wos/wos.service.ts
index 9478c1e..be9e1c1 100644
--- a/back/src/wos/wos.service.ts
+++ b/back/src/wos/wos.service.ts
@@ -188,7 +188,7 @@ export class WosService {
       await this.couponLogRepo.save({ fid, coupon_code: coupon.code, result_msg: result.message });
       results.push({ name: coupon.name, code: coupon.code, status, message: result.message });
 
-      await new Promise((r) => setTimeout(r, 10000));
+      await new Promise((r) => setTimeout(r, 30000));
     }
 
     return results;