diff --git a/README.md b/README.md
index e63cd5c..f4e8663 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ probe -ip 6
 probe -s5 127.0.0.1:54321
 
 # 使用自定义服务器（STUN协议）
-probe -s1 stun.voipia.net:3478
+probe -s1 stun.hot-chilli.net:3478
 ```
 
 # 授权协议
diff --git a/probe.go b/probe.go
index 96c81b7..9232490 100644
--- a/probe.go
+++ b/probe.go
@@ -31,7 +31,7 @@ func main() {
 		to time.Duration
 	)
 	flag.StringVar(&ip, "ip", "", "协议版本")
-	flag.StringVar(&s1, "s1", "stun.l.google.com:19302", "主服务器")
+	flag.StringVar(&s1, "s1", "stun.nextcloud.com:3478", "主服务器")
 	flag.StringVar(&s2, "s2", "", "次服务器")
 	flag.StringVar(&s5, "s5", "", "代理地址")
 	flag.DurationVar(&to, "to", 10*time.Second, "超时时间")