diff --git a/apptools/io/h5/file.py b/apptools/io/h5/file.py
index c3c0201a..08c9a58b 100644
--- a/apptools/io/h5/file.py
+++ b/apptools/io/h5/file.py
@@ -7,7 +7,7 @@
 # is also available online at http://www.enthought.com/licenses/BSD.txt
 #
 # Thanks for using Enthought open source!
-from collections import Mapping, MutableMapping
+from collections.abc import Mapping, MutableMapping
 from functools import partial
 import inspect