diff --git a/app.json b/app.json
index bac7dda..981ad1f 100644
--- a/app.json
+++ b/app.json
@@ -8,6 +8,10 @@
         "UUID": {
             "description": "V2Ray UUID",
             "value": "ce7ea10b-5b27-49ab-a93d-6b184df9cce9"
+        },
+        "TUNNEL_TOKEN": {
+            "description": "Cloudflare Tunnel Token",
+            "required": false
         }
     },
     "website": "https://github.com/zizifn/v2ray-heroku",