diff --git a/homeassistant/components/litterrobot/button.py b/homeassistant/components/litterrobot/button.py
index 3b8be295731..90fbecc6753 100644
--- a/homeassistant/components/litterrobot/button.py
+++ b/homeassistant/components/litterrobot/button.py
@@ -3,8 +3,8 @@ from __future__ import annotations
 
 from homeassistant.components.button import ButtonEntity
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ENTITY_CATEGORY_CONFIG
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import EntityCategory
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from .const import DOMAIN
@@ -35,7 +35,7 @@ class LitterRobotResetWasteDrawerButton(LitterRobotEntity, ButtonEntity):
     """Litter-Robot reset waste drawer button."""
 
     _attr_icon = "mdi:delete-variant"
-    _attr_entity_category = ENTITY_CATEGORY_CONFIG
+    _attr_entity_category = EntityCategory.CONFIG
 
     async def async_press(self) -> None:
         """Press the button."""
diff --git a/homeassistant/components/litterrobot/entity.py b/homeassistant/components/litterrobot/entity.py
index 206358201c3..2c4ed37f955 100644
--- a/homeassistant/components/litterrobot/entity.py
+++ b/homeassistant/components/litterrobot/entity.py
@@ -9,9 +9,8 @@ from typing import Any
 from pylitterbot import Robot
 from pylitterbot.exceptions import InvalidCommandException
 
-from homeassistant.const import ENTITY_CATEGORY_CONFIG
 from homeassistant.core import callback
-from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.helpers.entity import DeviceInfo, EntityCategory
 from homeassistant.helpers.event import async_call_later
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 import homeassistant.util.dt as dt_util
@@ -119,7 +118,7 @@ class LitterRobotControlEntity(LitterRobotEntity):
 class LitterRobotConfigEntity(LitterRobotControlEntity):
     """A Litter-Robot entity that can control configuration of the unit."""
 
-    _attr_entity_category = ENTITY_CATEGORY_CONFIG
+    _attr_entity_category = EntityCategory.CONFIG
 
     def __init__(self, robot: Robot, entity_type: str, hub: LitterRobotHub) -> None:
         """Init a Litter-Robot control entity."""
diff --git a/homeassistant/components/litterrobot/sensor.py b/homeassistant/components/litterrobot/sensor.py
index 6b4dc1b3300..de3126986d1 100644
--- a/homeassistant/components/litterrobot/sensor.py
+++ b/homeassistant/components/litterrobot/sensor.py
@@ -5,9 +5,9 @@ from datetime import datetime
 
 from pylitterbot.robot import Robot
 
-from homeassistant.components.sensor import SensorEntity, StateType
+from homeassistant.components.sensor import SensorDeviceClass, SensorEntity, StateType
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import DEVICE_CLASS_TIMESTAMP, PERCENTAGE
+from homeassistant.const import PERCENTAGE
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
@@ -70,7 +70,7 @@ class LitterRobotSleepTimeSensor(LitterRobotPropertySensor):
     @property
     def device_class(self) -> str:
         """Return the device class, if any."""
-        return DEVICE_CLASS_TIMESTAMP
+        return SensorDeviceClass.TIMESTAMP
 
 
 ROBOT_SENSORS: list[tuple[type[LitterRobotPropertySensor], str, str]] = [