diff --git a/docs/config.yaml b/docs/config.yaml
index baddb200..9f7fe077 100644
--- a/docs/config.yaml
+++ b/docs/config.yaml
@@ -933,6 +933,7 @@ proxies: # socks5
     reserved: "U4An"
     # 数组格式也是合法的
     # reserved: [209,98,59]
+    # persistent-keepalive: 0
     # 一个出站代理的标识。当值不为空时，将使用指定的 proxy 发出连接
     # dialer-proxy: "ss1"
     # remote-dns-resolve: true # 强制 dns 远程解析，默认值为 false