diff --git a/homeassistant/components/nuki/__init__.py b/homeassistant/components/nuki/__init__.py
index 51f5c02d2bf..0ea75590ee3 100644
--- a/homeassistant/components/nuki/__init__.py
+++ b/homeassistant/components/nuki/__init__.py
@@ -209,6 +209,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         name=f"Nuki Bridge {bridge_id}",
         model="Hardware Bridge",
         sw_version=info["versions"]["firmwareVersion"],
+        serial_number=parse_id(info["ids"]["hardwareId"]),
     )
 
     try:
@@ -384,4 +385,5 @@ class NukiEntity(CoordinatorEntity[NukiCoordinator], Generic[_NukiDeviceT]):
             model=self._nuki_device.device_model_str.capitalize(),
             sw_version=self._nuki_device.firmware_version,
             via_device=(DOMAIN, self.coordinator.bridge_id),
+            serial_number=parse_id(self._nuki_device.nuki_id),
         )