diff --git a/sqlalchemy_imageattach/file.py b/sqlalchemy_imageattach/file.py
index 50de19b..57ef408 100644
--- a/sqlalchemy_imageattach/file.py
+++ b/sqlalchemy_imageattach/file.py
@@ -4,7 +4,7 @@
 The file-like types which wraps/proxies an other file objects.
 
 """
-from collections import Iterator
+from collections.abc import Iterator
 import os
 
 __all__ = 'FileProxy', 'ReusableFileProxy', 'SeekableFileProxy'