diff --git a/.devcontainer.json b/.devcontainer.json
index 56b3290..a770f6f 100644
--- a/.devcontainer.json
+++ b/.devcontainer.json
@@ -1,6 +1,6 @@
 {
     "name": "ludeeus/integration_blueprint",
-    "image": "mcr.microsoft.com/vscode/devcontainers/python:0-3.11-bullseye",
+    "image": "mcr.microsoft.com/vscode/devcontainers/python:3.12-bullseye",
     "postCreateCommand": "scripts/setup",
     "forwardPorts": [
         8123
diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 221a48d..3cf0986 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.11"]
+        python-version: ["3.12"]
     steps:
       - name: Check out repository
         uses: actions/checkout@v4.1.1
diff --git a/custom_components/schluter/climate.py b/custom_components/schluter/climate.py
index aaf357a..aee7d11 100644
--- a/custom_components/schluter/climate.py
+++ b/custom_components/schluter/climate.py
@@ -24,7 +24,8 @@
     HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_TEMPERATURE, TEMP_CELSIUS
+from homeassistant.const import ATTR_TEMPERATURE
+from homeassistant.const import UnitOfTemperature
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -57,7 +58,12 @@ class SchluterThermostat(CoordinatorEntity[DataUpdateCoordinator], ClimateEntity
     """Define an Schluter Thermostat Entity."""
 
     _attr_hvac_modes = [HVACMode.HEAT, HVACMode.AUTO, HVACMode.OFF]
-    _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
+    _attr_supported_features = (
+        ClimateEntityFeature.TARGET_TEMPERATURE
+        | ClimateEntityFeature.TURN_ON
+        | ClimateEntityFeature.TURN_OFF
+    )
+    _enable_turn_on_off_backwards_compatibility: bool = False
 
     coordinator: DataUpdateCoordinator[dict[str, dict[str, Thermostat]]]
 
@@ -116,7 +122,7 @@ def name(self):
     @property
     def temperature_unit(self):
         """Schluter API always uses celsius."""
-        return TEMP_CELSIUS
+        return UnitOfTemperature.CELSIUS
 
     @property
     def current_temperature(self):
diff --git a/custom_components/schluter/sensor.py b/custom_components/schluter/sensor.py
index 4e9799e..cdccc43 100644
--- a/custom_components/schluter/sensor.py
+++ b/custom_components/schluter/sensor.py
@@ -6,7 +6,7 @@
     SensorEntity,
     SensorStateClass,
 )
-from homeassistant.const import ENERGY_KILO_WATT_HOUR, POWER_WATT, TEMP_CELSIUS
+from homeassistant.const import UnitOfTemperature, UnitOfEnergy, UnitOfPower
 from homeassistant.helpers.update_coordinator import (
     CoordinatorEntity,
     DataUpdateCoordinator,
@@ -56,7 +56,7 @@ class SchluterTargetTemperatureSensor(
 ):
     """Representation of a Sensor."""
 
-    _attr_native_unit_of_measurement = TEMP_CELSIUS
+    _attr_native_unit_of_measurement = UnitOfTemperature.CELSIUS
     _attr_device_class = SensorDeviceClass.TEMPERATURE
     _attr_state_class = SensorStateClass.MEASUREMENT
 
@@ -94,7 +94,7 @@ def native_value(self) -> float:
 class SchluterTemperatureSensor(CoordinatorEntity[DataUpdateCoordinator], SensorEntity):
     """Representation of a Sensor."""
 
-    _attr_native_unit_of_measurement = TEMP_CELSIUS
+    _attr_native_unit_of_measurement = UnitOfTemperature.CELSIUS
     _attr_device_class = SensorDeviceClass.TEMPERATURE
     _attr_state_class = SensorStateClass.MEASUREMENT
 
@@ -132,7 +132,7 @@ def native_value(self) -> float:
 class SchluterPowerSensor(CoordinatorEntity[DataUpdateCoordinator], SensorEntity):
     """Representation of a Sensor."""
 
-    _attr_native_unit_of_measurement = POWER_WATT
+    _attr_native_unit_of_measurement = UnitOfPower.WATT
     _attr_device_class = SensorDeviceClass.POWER
     _attr_state_class = SensorStateClass.MEASUREMENT
 
@@ -172,7 +172,7 @@ def native_value(self) -> int:
 class SchluterEnergySensor(CoordinatorEntity[DataUpdateCoordinator], SensorEntity):
     """Representation of a PowerSensor."""
 
-    _attr_native_unit_of_measurement = ENERGY_KILO_WATT_HOUR
+    _attr_native_unit_of_measurement = UnitOfEnergy.KILO_WATT_HOUR
     _attr_device_class = SensorDeviceClass.ENERGY
     _attr_state_class = SensorStateClass.TOTAL
 
diff --git a/hacs.json b/hacs.json
index 051d1e5..44b02a8 100644
--- a/hacs.json
+++ b/hacs.json
@@ -1,6 +1,6 @@
 {
     "name": "AIO Schluter DITRA-HEAT-E WIFI",
-    "homeassistant": "2023.7.0",
+    "homeassistant": "2024.5.3",
     "render_readme": true,
     "zip_release": true,
     "filename": "ha-schluter.zip"
diff --git a/pyproject.toml b/pyproject.toml
index dfcc556..7b33037 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -94,5 +94,5 @@ line-length = 88
 # Allow unused variables when underscore-prefixed.
 dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
 
-# Assume Python 3.11
-target-version = "py311"
+# Assume Python 3.12
+target-version = "py312"
diff --git a/requirements.txt b/requirements.txt
index 3d34c9f..a5dbfbb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 colorlog==6.8.2
-homeassistant==2023.8.1
+homeassistant==2024.5.3
 pip>=23.0
 ruff==0.2.2