diff --git a/backend/country/src/main.go b/backend/country/src/main.go
index 02d2606..1dc053e 100644
--- a/backend/country/src/main.go
+++ b/backend/country/src/main.go
@@ -5,6 +5,7 @@ import (
 	"country/logger"  // 日志工具包
 	"country/logic"   // 业务逻辑处理包
 
+	"time"
 	"github.com/gin-contrib/cors"
 	"github.com/gin-gonic/gin" // Gin框架，用于构建HTTP服务
 	_ "github.com/lib/pq"      // PostgreSQL数据库驱动（下划线表示仅初始化不直接使用）