diff --git a/custom_components/mikrotik_router/device_tracker.py b/custom_components/mikrotik_router/device_tracker.py
index c6db1e2..3222a98 100644
--- a/custom_components/mikrotik_router/device_tracker.py
+++ b/custom_components/mikrotik_router/device_tracker.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 from logging import getLogger
 from collections.abc import Mapping
 from datetime import timedelta
-from typing import Any
+from typing import Any, Callable
 
 from homeassistant.components.device_tracker.config_entry import ScannerEntity
 from homeassistant.config_entries import ConfigEntry