diff --git a/homeassistant/components/moehlenhoff_alpha2/manifest.json b/homeassistant/components/moehlenhoff_alpha2/manifest.json
index 14f40991a84..45b7f8c9565 100644
--- a/homeassistant/components/moehlenhoff_alpha2/manifest.json
+++ b/homeassistant/components/moehlenhoff_alpha2/manifest.json
@@ -5,5 +5,5 @@
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/moehlenhoff_alpha2",
   "iot_class": "local_push",
-  "requirements": ["moehlenhoff-alpha2==1.3.1"]
+  "requirements": ["moehlenhoff-alpha2==1.4.0"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 57f40b4c018..977c8a1f574 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1427,7 +1427,7 @@ minio==7.1.12
 moat-ble==0.1.1
 
 # homeassistant.components.moehlenhoff_alpha2
-moehlenhoff-alpha2==1.3.1
+moehlenhoff-alpha2==1.4.0
 
 # homeassistant.components.monzo
 monzopy==1.4.2
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 65a64a8b2ea..418e030d42f 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1196,7 +1196,7 @@ minio==7.1.12
 moat-ble==0.1.1
 
 # homeassistant.components.moehlenhoff_alpha2
-moehlenhoff-alpha2==1.3.1
+moehlenhoff-alpha2==1.4.0
 
 # homeassistant.components.monzo
 monzopy==1.4.2
diff --git a/tests/components/moehlenhoff_alpha2/__init__.py b/tests/components/moehlenhoff_alpha2/__init__.py
index 50087794560..90d6d88fedc 100644
--- a/tests/components/moehlenhoff_alpha2/__init__.py
+++ b/tests/components/moehlenhoff_alpha2/__init__.py
@@ -19,7 +19,7 @@ async def mock_update_data(self):
     for _type in ("HEATAREA", "HEATCTRL", "IODEVICE"):
         if not isinstance(data["Devices"]["Device"][_type], list):
             data["Devices"]["Device"][_type] = [data["Devices"]["Device"][_type]]
-    self.static_data = data
+    self._static_data = data
 
 
 async def init_integration(hass: HomeAssistant) -> MockConfigEntry: