diff --git a/homeassistant/components/qbus/light.py b/homeassistant/components/qbus/light.py
index 61225f112434..81c7a3aa21ac 100644
--- a/homeassistant/components/qbus/light.py
+++ b/homeassistant/components/qbus/light.py
@@ -79,7 +79,7 @@ class QbusLight(QbusEntity, LightEntity):
         await self._async_publish_output_state(state)
 
     async def _handle_state_received(self, state: QbusMqttAnalogState) -> None:
-        percentage = round(state.read_percentage())
+        percentage = round(state.read_percentage() or 0)
         self._set_state(percentage)
 
     def _set_state(self, percentage: int) -> None:
diff --git a/homeassistant/components/qbus/manifest.json b/homeassistant/components/qbus/manifest.json
index 15392f6cc97c..c14a46eae118 100644
--- a/homeassistant/components/qbus/manifest.json
+++ b/homeassistant/components/qbus/manifest.json
@@ -14,5 +14,5 @@
     "cloudapp/QBUSMQTTGW/+/state"
   ],
   "quality_scale": "bronze",
-  "requirements": ["qbusmqttapi==1.4.2"]
+  "requirements": ["qbusmqttapi==1.4.3"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index b1051491da6e..1dbad95c934a 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -2784,7 +2784,7 @@ pyzerproc==0.4.8
 qbittorrent-api==2024.9.67
 
 # homeassistant.components.qbus
-qbusmqttapi==1.4.2
+qbusmqttapi==1.4.3
 
 # homeassistant.components.qingping
 qingping-ble==1.1.0
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index ef005550ac51..2215fe04a774 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -2368,7 +2368,7 @@ pyzerproc==0.4.8
 qbittorrent-api==2024.9.67
 
 # homeassistant.components.qbus
-qbusmqttapi==1.4.2
+qbusmqttapi==1.4.3
 
 # homeassistant.components.qingping
 qingping-ble==1.1.0