diff --git a/opt/xray/d2ray.json.in b/opt/xray/d2ray.json.in
index d3c35c2..54f02a3 100644
--- a/opt/xray/d2ray.json.in
+++ b/opt/xray/d2ray.json.in
@@ -27,7 +27,11 @@
             "privateKey": "{{ PRIVATE_KEY }}",
             "shortIds": [
               ""
-            ]
+            ],
+            "sockopt": {
+              "tcpFastOpen": true,
+              "tcpNoDelay": true
+            }
           }
         },
         "sniffing": {