diff --git a/custom_components/sagemcom_fast/device_tracker.py b/custom_components/sagemcom_fast/device_tracker.py
index 47e9b4e..1305f43 100644
--- a/custom_components/sagemcom_fast/device_tracker.py
+++ b/custom_components/sagemcom_fast/device_tracker.py
@@ -5,7 +5,7 @@
 from typing import Any, Dict, Optional
 
 import async_timeout
-from homeassistant.components.device_tracker import SOURCE_TYPE_ROUTER
+from homeassistant.components.device_tracker import SourceType
 from homeassistant.components.device_tracker.config_entry import ScannerEntity
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.restore_state import RestoreEntity
@@ -107,7 +107,7 @@ def unique_id(self) -> str:
     @property
     def source_type(self) -> str:
         """Return the source type, eg gps or router, of the device."""
-        return SOURCE_TYPE_ROUTER
+        return SourceType.ROUTER
 
     @property
     def is_connected(self) -> bool: