Google Fit DataUpdateListener callback not called

Question

I'm trying to follow this guide to add a DataUpdateListener to listen for DataType.TYPE_WEIGHT events like so:

PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
            new Intent(this, FitnessStoreUpdatesReceiver.class), PendingIntent.FLAG_UPDATE_CURRENT);
Fitness.HistoryApi.registerDataUpdateListener(googleApiClient,
            new DataUpdateListenerRegistrationRequest.Builder()
                    .setDataType(DataType.TYPE_WEIGHT)
                    .setPendingIntent(pendingIntent)
                    .build());

My FitnessStoreUpdatesReceiver is identical to the one linked in the guide. However, adding a weight event through the Google Fit Android app does not trigger my listener. Have I missed something in my implementation?