diff --git a/supervisor/core.py b/supervisor/core.py
index d3dbd8809..c4aab3ac6 100644
--- a/supervisor/core.py
+++ b/supervisor/core.py
@@ -244,6 +244,7 @@ class Core(CoreSysAttributes):
             self.sys_create_task(self.sys_resolution.fixup.run_autofix())
 
             self.state = CoreState.RUNNING
+            self.sys_homeassistant.websocket.supervisor_update_event("supervisor", {})
             _LOGGER.info("Supervisor is up and running")
 
     async def stop(self):