diff --git a/xarray/core/dataset_variables.py b/xarray/core/dataset_variables.py
index 6521da61444..705c6a74ea2 100644
--- a/xarray/core/dataset_variables.py
+++ b/xarray/core/dataset_variables.py
@@ -1,6 +1,5 @@
 import typing
 from collections.abc import Hashable, Iterator, Mapping
-from typing import Any
 
 import numpy as np
 
@@ -13,7 +12,7 @@
     from xarray.core.dataset import Dataset
 
 
-class DataVariables(Mapping[Any, "DataArray"]):
+class DataVariables(Mapping[Hashable, "DataArray"]):
     __slots__ = ("_dataset",)
 
     def __init__(self, dataset: "Dataset"):