diff --git a/src/monty/io.py b/src/monty/io.py
index 81110534e..ccd24189e 100644
--- a/src/monty/io.py
+++ b/src/monty/io.py
@@ -19,7 +19,7 @@
 from typing import TYPE_CHECKING, Literal, cast
 
 if TYPE_CHECKING:
-    from typing import IO, Any, Generator, Union
+    from typing import IO, Any, Iterator, Union
 
 
 class EncodingWarning(Warning): ...  # Added in Python 3.10