diff --git a/homeassistant/components/modbus/manifest.json b/homeassistant/components/modbus/manifest.json
index f5c7bf2df4e..9f2208de175 100644
--- a/homeassistant/components/modbus/manifest.json
+++ b/homeassistant/components/modbus/manifest.json
@@ -4,5 +4,6 @@
   "documentation": "https://www.home-assistant.io/integrations/modbus",
   "requirements": ["pymodbus==2.5.2"],
   "codeowners": ["@adamchengtkc", "@janiversen", "@vzahradnik"],
+  "quality_scale": "silver",
   "iot_class": "local_polling"
 }