diff --git a/dask_ml/_typing.py b/dask_ml/_typing.py
index cda7c20b5..1c61560f8 100644
--- a/dask_ml/_typing.py
+++ b/dask_ml/_typing.py
@@ -16,6 +16,6 @@
 FrameOrSeriesUnion = Union[DataFrame, Series, dd.Series, dd.DataFrame]
 SeriesType = Union[dd.Series, Series]
 DataFrameType = Union[DataFrame, dd.DataFrame]
-Number = Union[int, float, np.float64, np.int64, np.int32]
+Number = Union[int, np.float64, np.float64, np.int64, np.int32]
 Int = Union[int, np.int64, np.int32]
 NDArrayOrScalar = Union[np.ndarray, Sequence[Number], Number]