diff --git a/custom_components/dual_smart_thermostat/climate.py b/custom_components/dual_smart_thermostat/climate.py
index 6cf8703..c101445 100644
--- a/custom_components/dual_smart_thermostat/climate.py
+++ b/custom_components/dual_smart_thermostat/climate.py
@@ -29,7 +29,7 @@
     STATE_UNAVAILABLE,
     STATE_UNKNOWN,
 )
-from homeassistant.core import CoreState, HomeAssistant, ServiceCall, callback
+from homeassistant.core import CoreState, Event, HomeAssistant, ServiceCall, callback
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.dispatcher import (
     async_dispatcher_connect,
@@ -45,7 +45,7 @@
 from homeassistant.helpers.reload import async_setup_reload_service
 from homeassistant.helpers.restore_state import RestoreEntity
 from homeassistant.helpers.service import extract_entity_ids
-from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType, EventType
+from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 import voluptuous as vol
 
 from custom_components.dual_smart_thermostat.hvac_action_reason.hvac_action_reason_external import (
@@ -730,9 +730,7 @@ def max_temp(self) -> float:
         # Get default temp from super class
         return super().max_temp
 
-    async def _async_sensor_changed(
-        self, event: EventType[EventStateChangedData]
-    ) -> None:
+    async def _async_sensor_changed(self, event: Event[EventStateChangedData]) -> None:
         """Handle temperature changes."""
         new_state = event.data.get("new_state")
         _LOGGER.info("Sensor change: %s", new_state)
@@ -747,7 +745,7 @@ async def _async_sensor_changed(
         self.async_write_ha_state()
 
     async def _async_sensor_floor_changed(
-        self, event: EventType[EventStateChangedData]
+        self, event: Event[EventStateChangedData]
     ) -> None:
         """Handle floor temperature changes."""
         new_state = event.data.get("new_state")
@@ -768,9 +766,7 @@ async def _check_device_initial_state(self) -> None:
             )
             await self.hvac_device.async_turn_off()
 
-    async def _async_opening_changed(
-        self, event: EventType[EventStateChangedData]
-    ) -> None:
+    async def _async_opening_changed(self, event: Event[EventStateChangedData]) -> None:
         """Handle opening changes."""
         new_state = event.data.get("new_state")
         _LOGGER.info("Opening changed: %s", new_state)
@@ -832,7 +828,7 @@ def _async_hvac_mode_changed(self, hvac_mode) -> None:
         self.async_write_ha_state()
 
     @callback
-    def _async_switch_changed(self, event: EventType[EventStateChangedData]) -> None:
+    def _async_switch_changed(self, event: Event[EventStateChangedData]) -> None:
         """Handle heater switch state changes."""
         _LOGGER.debug("Switch changed: %s", event.data)
         new_state = event.data.get("new_state")
diff --git a/custom_components/dual_smart_thermostat/const.py b/custom_components/dual_smart_thermostat/const.py
index ea6d7c6..5508e14 100644
--- a/custom_components/dual_smart_thermostat/const.py
+++ b/custom_components/dual_smart_thermostat/const.py
@@ -1,6 +1,7 @@
 """const."""
 
-from homeassistant.backports.enum import StrEnum
+import enum
+
 from homeassistant.components.climate.const import (
     PRESET_ACTIVITY,
     PRESET_AWAY,
@@ -82,7 +83,7 @@
 )
 
 
-class ToleranceDevice(StrEnum):
+class ToleranceDevice(enum.StrEnum):
     """Tolerance device for climate devices."""
 
     HEATER = "heater"
diff --git a/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason.py b/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason.py
index 75d9139..d3ba615 100644
--- a/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason.py
+++ b/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason.py
@@ -1,4 +1,4 @@
-from enum import StrEnum
+import enum
 from itertools import chain
 
 from custom_components.dual_smart_thermostat.hvac_action_reason.hvac_action_reason_external import (
@@ -12,7 +12,7 @@
 SERVICE_SET_HVAC_ACTION_REASON = "set_hvac_action_reason"
 
 
-class HVACActionReason(StrEnum):
+class HVACActionReason(enum.StrEnum):
     """HVAC Action Reason for climate devices."""
 
     _ignore_ = "member cls"
diff --git a/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason_external.py b/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason_external.py
index 687052c..0603866 100644
--- a/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason_external.py
+++ b/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason_external.py
@@ -1,7 +1,7 @@
-from enum import StrEnum
+import enum
 
 
-class HVACActionReasonExternal(StrEnum):
+class HVACActionReasonExternal(enum.StrEnum):
     """External HVAC Action Reason for climate devices."""
 
     PRESENCE = "presence"
diff --git a/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason_internal.py b/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason_internal.py
index 4bac47e..5a95e5f 100644
--- a/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason_internal.py
+++ b/custom_components/dual_smart_thermostat/hvac_action_reason/hvac_action_reason_internal.py
@@ -1,7 +1,7 @@
-from enum import StrEnum
+import enum
 
 
-class HVACActionReasonInternal(StrEnum):
+class HVACActionReasonInternal(enum.StrEnum):
     """Internal HVAC Action Reason for climate devices."""
 
     TARGET_TEMP_NOT_REACHED = "target_temp_not_reached"
diff --git a/custom_components/dual_smart_thermostat/managers/opening_manager.py b/custom_components/dual_smart_thermostat/managers/opening_manager.py
index cd42d02..30eec07 100644
--- a/custom_components/dual_smart_thermostat/managers/opening_manager.py
+++ b/custom_components/dual_smart_thermostat/managers/opening_manager.py
@@ -1,6 +1,6 @@
 """Opening Manager for Dual Smart Thermostat."""
 
-from enum import StrEnum
+import enum
 from itertools import chain
 import logging
 from typing import List
@@ -27,7 +27,7 @@
 _LOGGER = logging.getLogger(__name__)
 
 
-class OpeningHvacModeScope(StrEnum):
+class OpeningHvacModeScope(enum.StrEnum):
     """Opening Scope Options"""
 
     _ignore_ = "member cls"