Add version number for versionchanged directive (backport from 3.3)
diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index 6036f7d..32f66fe 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -723,7 +723,7 @@
Here, we create two instances of :class:`WidgetTestCase`, each of which runs a
single test.
- .. versionchanged::
+ .. versionchanged:: 3.2
:class:`TestCase` can be instantiated successfully without providing a method
name. This makes it easier to experiment with :class:`TestCase` from the
interactive interpreter.