diff --git a/homeassistant/components/notion/entity.py b/homeassistant/components/notion/entity.py
index d8179aca51b8..0d1a9fdeee16 100644
--- a/homeassistant/components/notion/entity.py
+++ b/homeassistant/components/notion/entity.py
@@ -50,7 +50,13 @@ class NotionEntity(CoordinatorEntity[NotionDataUpdateCoordinator]):
         )
 
         if bridge := self._async_get_bridge(bridge_id):
-            self._attr_device_info["via_device"] = (DOMAIN, bridge.hardware_id)
+            self._attr_device_info["via_device_id"] = (
+                dr.async_get_device_id_by_identifier(
+                    self.coordinator.hass,
+                    (DOMAIN, bridge.hardware_id),
+                    config_entry_id=self.coordinator.config_entry.entry_id,
+                )
+            )
 
         self._attr_extra_state_attributes = {}
         self._attr_unique_id = listener_id
diff --git a/tests/components/notion/test_init.py b/tests/components/notion/test_init.py
new file mode 100644
index 000000000000..9706e877d21f
--- /dev/null
+++ b/tests/components/notion/test_init.py
@@ -0,0 +1,63 @@
+"""Test Notion setup."""
+
+from copy import deepcopy
+from typing import Any
+
+from aionotion.listener.models import ListenerKind
+import pytest
+
+from homeassistant.components.notion.const import DOMAIN
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr
+
+from tests.common import MockConfigEntry
+
+# The id of the bridge in the bridge fixture; the sensor must reference it to link.
+BRIDGE_ID = 12345
+BRIDGE_HARDWARE_ID = "0x0000000000000012"
+SENSOR_HARDWARE_ID = "0x0000000000000034"
+
+
+@pytest.fixture(name="data_bridge")
+def data_bridge_fixture(data_bridge: dict[str, Any]) -> dict[str, Any]:
+    """Give the bridge a hardware id distinct from the sensor."""
+    data = deepcopy(data_bridge)
+    data["base_stations"][0]["hardware_id"] = BRIDGE_HARDWARE_ID
+    return data
+
+
+@pytest.fixture(name="data_sensor")
+def data_sensor_fixture(data_sensor: dict[str, Any]) -> dict[str, Any]:
+    """Link the sensor to the bridge and give it a distinct hardware id."""
+    data = deepcopy(data_sensor)
+    data["sensors"][0]["hardware_id"] = SENSOR_HARDWARE_ID
+    data["sensors"][0]["bridge"]["id"] = BRIDGE_ID
+    data["sensors"][0]["bridge"]["hardware_id"] = BRIDGE_HARDWARE_ID
+    return data
+
+
+@pytest.fixture(name="data_listener")
+def data_listener_fixture(data_listener: dict[str, Any]) -> dict[str, Any]:
+    """Use a listener kind that maps to an entity so a sensor device is created."""
+    data = deepcopy(data_listener)
+    data["listeners"][0]["definition_id"] = ListenerKind.HINGED_WINDOW.value
+    return data
+
+
+@pytest.mark.usefixtures("setup_config_entry")
+async def test_device_via_device_links(
+    hass: HomeAssistant,
+    config_entry: MockConfigEntry,
+    device_registry: dr.DeviceRegistry,
+) -> None:
+    """Test that a sensor device links to its bridge via via_device_id."""
+    bridge_device = device_registry.async_get_device_by_identifier(
+        (DOMAIN, BRIDGE_HARDWARE_ID), config_entry.entry_id
+    )
+    assert bridge_device is not None
+
+    sensor_device = device_registry.async_get_device_by_identifier(
+        (DOMAIN, SENSOR_HARDWARE_ID), config_entry.entry_id
+    )
+    assert sensor_device is not None
+    assert sensor_device.via_device_id == bridge_device.id