diff --git a/Doc/library/difflib.rst b/Doc/library/difflib.rst
index 4d19b40..899d7e5 100644
--- a/Doc/library/difflib.rst
+++ b/Doc/library/difflib.rst
@@ -45,7 +45,7 @@
    the purpose of sequence matching. This heuristic can be turned off by setting
    the ``autojunk`` argument to ``False`` when creating the :class:`SequenceMatcher`.
 
-   .. versionadded:: 2.7
+   .. versionadded:: 2.7.1
       The *autojunk* parameter.
 
 .. class:: Differ
@@ -363,6 +363,9 @@
    The optional argument *autojunk* can be used to disable the automatic junk
    heuristic.
 
+   .. versionadded:: 2.7.1
+      The *autojunk* parameter.
+
    :class:`SequenceMatcher` objects have the following methods: