diff --git a/xcdat/regridder/grid.py b/xcdat/regridder/grid.py
index 3752b2ef..152b2272 100644
--- a/xcdat/regridder/grid.py
+++ b/xcdat/regridder/grid.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Dict, List, Optional, Tuple, Union
 
 import numpy as np