diff --git a/hassio/api/supervisor.py b/hassio/api/supervisor.py
index e8f4846eb..7616fe3ef 100644
--- a/hassio/api/supervisor.py
+++ b/hassio/api/supervisor.py
@@ -99,7 +99,7 @@ class APISupervisor(object):
             raise RuntimeError("Version {} is already in use".format(version))
 
         return await asyncio.shield(
-            self.supervisor.update(version=version), loop=self.loop)
+            self.supervisor.update(version), loop=self.loop)
 
     @api_process
     async def reload(self, request):