update version changed
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 326114f..3d492ba 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -1632,12 +1632,12 @@
.. versionadded:: 3.2
The *exist_ok* parameter.
- .. versionchanged:: 3.3.6
+ .. versionchanged:: 3.4.1
- Before Python 3.3.6, if *exist_ok* was ``True`` and the directory existed,
+ Before Python 3.4.1, if *exist_ok* was ``True`` and the directory existed,
:func:`makedirs` would still raise an error if *mode* did not match the
mode of the existing directory. Since this behavior was impossible to
- implement safely, it was removed in Python 3.3.6. See :issue:`21082`.
+ implement safely, it was removed in Python 3.4.1. See :issue:`21082`.
.. function:: mkfifo(path, mode=0o666, *, dir_fd=None)