diff --git a/custom_components/purrsong/manifest.json b/custom_components/purrsong/manifest.json
index 581d18d..a8f1fca 100644
--- a/custom_components/purrsong/manifest.json
+++ b/custom_components/purrsong/manifest.json
@@ -9,5 +9,5 @@
   "iot_class": "cloud_polling",
   "issue_tracker": "https://github.com/RobertD502/home-assistant-lavviebot/issues",
   "requirements": ["lavviebotaio==0.2.0"],
-  "version": "0.1.11"
+  "version": "0.1.12"
 }
diff --git a/custom_components/purrsong/sensor.py b/custom_components/purrsong/sensor.py
index 9fdd6a2..52b20df 100644
--- a/custom_components/purrsong/sensor.py
+++ b/custom_components/purrsong/sensor.py
@@ -14,10 +14,9 @@
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import(
     PERCENTAGE,
-    TIME_MINUTES,
-    TIME_SECONDS,
     UnitOfMass,
     UnitOfTemperature,
+    UnitOfTime,
 )
 
 from homeassistant.core import HomeAssistant
@@ -206,10 +205,10 @@ def native_value(self) -> float | int:
         return round(self.cat_data.duration, 1)
 
     @property
-    def native_unit_of_measurement(self) -> str:
+    def native_unit_of_measurement(self) -> UnitOfTime:
         """ Return seconds as the native unit """
 
-        return TIME_SECONDS
+        return UnitOfTime.SECONDS
 
     @property
     def icon(self) -> str:
@@ -722,10 +721,10 @@ def native_value(self) -> float:
         return round(self.device_data.last_used_duration, 1)
 
     @property
-    def native_unit_of_measurement(self) -> str:
+    def native_unit_of_measurement(self) -> UnitOfTime:
         """ Return seconds as the native unit """
 
-        return TIME_SECONDS
+        return UnitOfTime.SECONDS
 
     @property
     def state_class(self) -> SensorStateClass:
@@ -1050,10 +1049,10 @@ def native_value(self) -> int:
         return self.device_data.wait_time
 
     @property
-    def native_unit_of_measurement(self) -> str:
+    def native_unit_of_measurement(self) -> UnitOfTime:
         """ Return minutes as the native unit """
 
-        return TIME_MINUTES
+        return UnitOfTime.MINUTES
 
     @property
     def entity_category(self) -> EntityCategory:
diff --git a/hacs.json b/hacs.json
index 69d4f1d..f70123c 100644
--- a/hacs.json
+++ b/hacs.json
@@ -3,7 +3,7 @@
   "name": "Lavviebot S",
   "render_readme": true,
   "country": "US",
-  "homeassistant": "2022.11.0b0",
+  "homeassistant": "2023.12.0",
   "zip_release": true,
   "filename": "purrsong.zip"
 }