diff --git a/custom_components/plant/plant_thresholds.py b/custom_components/plant/plant_thresholds.py
index b68ab1f..d898186 100644
--- a/custom_components/plant/plant_thresholds.py
+++ b/custom_components/plant/plant_thresholds.py
@@ -12,8 +12,7 @@
     LIGHT_LUX,
     PERCENTAGE,
     STATE_UNKNOWN,
-    TEMP_CELSIUS,
-    TEMP_FAHRENHEIT,
+    UnitOfTemperature,
 )
 from homeassistant.core import Event, HomeAssistant, callback
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
@@ -282,8 +281,8 @@ def state_attributes_changed(self, old_attributes, new_attributes):
             new_state = round(
                 TemperatureConverter.convert(
                     temperature=float(self.state),
-                    from_unit=TEMP_FAHRENHEIT,
-                    to_unit=TEMP_CELSIUS,
+                    from_unit=UnitOfTemperature.FAHRENHEIT,
+                    to_unit=UnitOfTemperature.CELSIUS,
                 )
             )
             _LOGGER.debug(
@@ -299,8 +298,8 @@ def state_attributes_changed(self, old_attributes, new_attributes):
             new_state = round(
                 TemperatureConverter.convert(
                     temperature=float(self.state),
-                    from_unit=TEMP_CELSIUS,
-                    to_unit=TEMP_FAHRENHEIT,
+                    from_unit=UnitOfTemperature.CELSIUS,
+                    to_unit=UnitOfTemperature.FAHRENHEIT,
                 )
             )
             _LOGGER.debug(
@@ -374,8 +373,8 @@ def state_attributes_changed(self, old_attributes, new_attributes):
             new_state = round(
                 TemperatureConverter.convert(
                     temperature=float(self.state),
-                    from_unit=TEMP_FAHRENHEIT,
-                    to_unit=TEMP_CELSIUS,
+                    from_unit=UnitOfTemperature.FAHRENHEIT,
+                    to_unit=UnitOfTemperature.CELSIUS,
                 )
             )
             _LOGGER.debug(
@@ -393,8 +392,8 @@ def state_attributes_changed(self, old_attributes, new_attributes):
             new_state = round(
                 TemperatureConverter.convert(
                     temperature=float(self.state),
-                    from_unit=TEMP_CELSIUS,
-                    to_unit=TEMP_FAHRENHEIT,
+                    from_unit=UnitOfTemperature.CELSIUS,
+                    to_unit=UnitOfTemperature.FAHRENHEIT,
                 )
             )
             _LOGGER.debug(