diff --git a/CloudronManifest.json b/CloudronManifest.json
index f6c7929..d631a03 100644
--- a/CloudronManifest.json
+++ b/CloudronManifest.json
@@ -37,6 +37,11 @@
       "title": "GL200 Protocol Port",
       "description": "Port over which GL200 clients can connect",
       "defaultValue": 5004
+    },
+    "GPS103_PORT": {
+      "title": "GPS103 Protocol Port",
+      "description": "Port over which GPS103 clients can connect",
+      "defaultValue": 5001
     }
   },
   "website": "https://www.traccar.org",