diff --git a/pylitterbot/robot/litterrobot4.py b/pylitterbot/robot/litterrobot4.py
index 4e7a489..36fe78d 100644
--- a/pylitterbot/robot/litterrobot4.py
+++ b/pylitterbot/robot/litterrobot4.py
@@ -624,7 +624,8 @@ async def send_subscribe_request(self, send_stop: bool = False) -> None:
                     ),
                     "extensions": {
                         "authorization": {
-                            "Authorization": await self._account.get_bearer_authorization()
+                            "Authorization": await self._account.get_bearer_authorization(),
+                            "host": "lr4.iothings.site",
                         }
                     },
                 },