diff --git a/Lib/os.py b/Lib/os.py
index 3ef3db8..9720479 100644
--- a/Lib/os.py
+++ b/Lib/os.py
@@ -434,7 +434,7 @@
 
 
 # Change environ to automatically call putenv(), unsetenv if they exist.
-from _abcoll import MutableMapping  # Can't use collections (bootstrap)
+from collections.abc import MutableMapping
 
 class _Environ(MutableMapping):
     def __init__(self, data, encodekey, decodekey, encodevalue, decodevalue, putenv, unsetenv):