diff --git a/.strict-typing b/.strict-typing
index 06b4fa56fb5..062aafc709c 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -579,6 +579,7 @@ homeassistant.components.wiz.*
 homeassistant.components.wled.*
 homeassistant.components.workday.*
 homeassistant.components.worldclock.*
+homeassistant.components.xbox.*
 homeassistant.components.xiaomi_ble.*
 homeassistant.components.yale_smart_alarm.*
 homeassistant.components.yalexs_ble.*
diff --git a/homeassistant/components/xbox/browse_media.py b/homeassistant/components/xbox/browse_media.py
index ab311e244b5..c5f1a5caf89 100644
--- a/homeassistant/components/xbox/browse_media.py
+++ b/homeassistant/components/xbox/browse_media.py
@@ -130,7 +130,7 @@ async def build_item_response(
     )
 
 
-def item_payload(item: InstalledPackage, images: dict[str, list[Image]]):
+def item_payload(item: InstalledPackage, images: dict[str, list[Image]]) -> BrowseMedia:
     """Create response payload for a single media item."""
     thumbnail = None
     image = _find_media_image(images.get(item.one_store_product_id, []))  # type: ignore[arg-type]
diff --git a/homeassistant/components/xbox/sensor.py b/homeassistant/components/xbox/sensor.py
index 45d5c7a6e47..91ddb2f3fe3 100644
--- a/homeassistant/components/xbox/sensor.py
+++ b/homeassistant/components/xbox/sensor.py
@@ -335,7 +335,7 @@ class XboxStorageDeviceSensorEntity(
         )
 
     @property
-    def data(self):
+    def data(self) -> StorageDevice | None:
         """Storage device data."""
         consoles = self.coordinator.data.result
         console = next((c for c in consoles if c.id == self._console.id), None)
diff --git a/mypy.ini b/mypy.ini
index fe18814bde0..2fdd78cffa5 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -5549,6 +5549,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.xbox.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.xiaomi_ble.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true