diff --git a/config/nginx/conf.d/xuqm.conf b/config/nginx/conf.d/xuqm.conf
index 827dd9c..f787ecd 100644
--- a/config/nginx/conf.d/xuqm.conf
+++ b/config/nginx/conf.d/xuqm.conf
@@ -5,6 +5,10 @@ server {
   charset utf-8;
   client_max_body_size 100m;
 
+  # Docker 内置 DNS resolver，每 10s 重新解析上游服务 IP
+  # 容器重建后 IP 变更时 nginx 自动感知，无需手动 reload
+  resolver 127.0.0.11 valid=10s ipv6=off;
+
   # 健康检查（宿主机 nginx 探活用）
   location /health {
     return 200 "ok\n";