diff --git a/docs/developers/manifest-reference.md b/docs/developers/manifest-reference.md
index 2516af247..986a07db6 100644
--- a/docs/developers/manifest-reference.md
+++ b/docs/developers/manifest-reference.md
@@ -749,6 +749,8 @@ All items must be of the type: `object` with the following properties:
 | `description` | string | Optional     |
 | `serviceName` | string | Optional     |
 | `port`        | number | **Required** |
+| `fromSubdomain`| string | Optional   |
+
 
 #### name