diff --git a/docs/config/transport.md b/docs/config/transport.md
index 7f5c417..d2c2d1d 100644
--- a/docs/config/transport.md
+++ b/docs/config/transport.md
@@ -488,6 +488,7 @@ OCSP 装订更新，与证书热重载的时间间隔。 单位：秒。默认
 ```json
 {
   "mark": 0,
+  "TCPMaxSeg": 1440,
   "tcpFastOpen": false,
   "tproxy": "off",
   "domainStrategy": "AsIs",