diff --git a/homeassistant/components/fitbit/coordinator.py b/homeassistant/components/fitbit/coordinator.py
index 5c156955f90..2126129d261 100644
--- a/homeassistant/components/fitbit/coordinator.py
+++ b/homeassistant/components/fitbit/coordinator.py
@@ -20,7 +20,7 @@ UPDATE_INTERVAL: Final = datetime.timedelta(minutes=30)
 TIMEOUT = 10
 
 
-class FitbitDeviceCoordinator(DataUpdateCoordinator):
+class FitbitDeviceCoordinator(DataUpdateCoordinator[dict[str, FitbitDevice]]):
     """Coordinator for fetching fitbit devices from the API."""
 
     def __init__(self, hass: HomeAssistant, api: FitbitApi) -> None: