diff --git a/homeassistant/components/starlink/device_tracker.py b/homeassistant/components/starlink/device_tracker.py
index 129efa0d0254..de9f413778a2 100644
--- a/homeassistant/components/starlink/device_tracker.py
+++ b/homeassistant/components/starlink/device_tracker.py
@@ -56,7 +56,7 @@ class StarlinkDeviceTrackerEntity(StarlinkEntity, TrackerEntity):
     entity_description: StarlinkDeviceTrackerEntityDescription
 
     @property
-    def source_type(self) -> SourceType | str:
+    def source_type(self) -> SourceType:
         """Return the source type, eg gps or router, of the device."""
         return SourceType.GPS
 
diff --git a/homeassistant/components/tesla_fleet/device_tracker.py b/homeassistant/components/tesla_fleet/device_tracker.py
index 1d396286d7cd..d27262c842d3 100644
--- a/homeassistant/components/tesla_fleet/device_tracker.py
+++ b/homeassistant/components/tesla_fleet/device_tracker.py
@@ -65,7 +65,7 @@ class TeslaFleetDeviceTrackerEntity(
         return self._attr_longitude
 
     @property
-    def source_type(self) -> SourceType | str:
+    def source_type(self) -> SourceType:
         """Return the source type of the device tracker."""
         return SourceType.GPS
 
diff --git a/homeassistant/components/tessie/device_tracker.py b/homeassistant/components/tessie/device_tracker.py
index d90222bf821f..20ab5aa829e3 100644
--- a/homeassistant/components/tessie/device_tracker.py
+++ b/homeassistant/components/tessie/device_tracker.py
@@ -44,7 +44,7 @@ class TessieDeviceTrackerEntity(TessieEntity, TrackerEntity):
         super().__init__(vehicle, self.key)
 
     @property
-    def source_type(self) -> SourceType | str:
+    def source_type(self) -> SourceType:
         """Return the source type of the device tracker."""
         return SourceType.GPS
 
diff --git a/homeassistant/components/volvooncall/device_tracker.py b/homeassistant/components/volvooncall/device_tracker.py
index d0d6abde414d..1f79bea7290d 100644
--- a/homeassistant/components/volvooncall/device_tracker.py
+++ b/homeassistant/components/volvooncall/device_tracker.py
@@ -62,7 +62,7 @@ class VolvoTrackerEntity(VolvoEntity, TrackerEntity):
         return longitude
 
     @property
-    def source_type(self) -> SourceType | str:
+    def source_type(self) -> SourceType:
         """Return the source type (GPS)."""
         return SourceType.GPS
 
diff --git a/tests/components/device_tracker/common.py b/tests/components/device_tracker/common.py
index b6341443d360..4842a91ce422 100644
--- a/tests/components/device_tracker/common.py
+++ b/tests/components/device_tracker/common.py
@@ -69,7 +69,7 @@ class MockScannerEntity(ScannerEntity):
         self._mac_address = "ad:de:ef:be:ed:fe"
 
     @property
-    def source_type(self):
+    def source_type(self) -> SourceType:
         """Return the source type, eg gps or router, of the device."""
         return SourceType.ROUTER
 
diff --git a/tests/components/device_tracker/test_config_entry.py b/tests/components/device_tracker/test_config_entry.py
index 5b9ce78e4f5d..7041b2d59ab1 100644
--- a/tests/components/device_tracker/test_config_entry.py
+++ b/tests/components/device_tracker/test_config_entry.py
@@ -162,7 +162,7 @@ class MockTrackerEntity(TrackerEntity):
         return self._battery_level
 
     @property
-    def source_type(self) -> SourceType | str:
+    def source_type(self) -> SourceType:
         """Return the source type, eg gps or router, of the device."""
         return SourceType.GPS
 
@@ -249,7 +249,7 @@ class MockScannerEntity(ScannerEntity):
         return False
 
     @property
-    def source_type(self) -> SourceType | str:
+    def source_type(self) -> SourceType:
         """Return the source type, eg gps or router, of the device."""
         return SourceType.ROUTER