diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index 96eebf2..f86fda0 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -622,7 +622,7 @@
    fails if no exception is raised.  To catch any of a group of exceptions, a tuple
    containing the exception classes may be passed as *exception*.
 
-   .. versionchanged:: 2.2
+   .. versionchanged:: 2.7
 
       If *callable* is omitted or None, returns a context manager so that the code
       under test can be written inline rather than as a function::