diff --git a/homeassistant/components/modbus/manifest.json b/homeassistant/components/modbus/manifest.json
index 14faad789fe..956961c7e67 100644
--- a/homeassistant/components/modbus/manifest.json
+++ b/homeassistant/components/modbus/manifest.json
@@ -5,6 +5,6 @@
   "documentation": "https://www.home-assistant.io/integrations/modbus",
   "iot_class": "local_polling",
   "loggers": ["pymodbus"],
-  "quality_scale": "gold",
+  "quality_scale": "platinum",
   "requirements": ["pymodbus==3.6.6"]
 }