diff --git a/.coveragerc b/.coveragerc
index 8a9fdf070c4..9de86199803 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -542,16 +542,12 @@ omit =
     homeassistant/components/kiwi/lock.py
     homeassistant/components/knx/__init__.py
     homeassistant/components/knx/climate.py
-    homeassistant/components/knx/const.py
     homeassistant/components/knx/cover.py
     homeassistant/components/knx/expose.py
     homeassistant/components/knx/knx_entity.py
     homeassistant/components/knx/light.py
     homeassistant/components/knx/notify.py
-    homeassistant/components/knx/scene.py
     homeassistant/components/knx/schema.py
-    homeassistant/components/knx/switch.py
-    homeassistant/components/knx/weather.py
     homeassistant/components/kodi/__init__.py
     homeassistant/components/kodi/browse_media.py
     homeassistant/components/kodi/const.py
diff --git a/homeassistant/components/knx/__init__.py b/homeassistant/components/knx/__init__.py
index d98dd6663a3..786c1264248 100644
--- a/homeassistant/components/knx/__init__.py
+++ b/homeassistant/components/knx/__init__.py
@@ -323,9 +323,9 @@ async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     return unload_ok
 
 
-async def async_update_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_update_entry(hass: HomeAssistant, entry: ConfigEntry) -> None:
     """Update a given config entry."""
-    return await hass.config_entries.async_reload(entry.entry_id)
+    await hass.config_entries.async_reload(entry.entry_id)
 
 
 class KNXModule:
diff --git a/script/hassfest/coverage.py b/script/hassfest/coverage.py
index 1e91edee90e..e4e8058c69b 100644
--- a/script/hassfest/coverage.py
+++ b/script/hassfest/coverage.py
@@ -34,7 +34,6 @@ ALLOWED_IGNORE_VIOLATIONS = {
     ("ifttt", "config_flow.py"),
     ("ios", "config_flow.py"),
     ("iqvia", "config_flow.py"),
-    ("knx", "scene.py"),
     ("konnected", "config_flow.py"),
     ("lcn", "scene.py"),
     ("life360", "config_flow.py"),