add whatsnew that was missed from 31d6de5aba009914efa8f0f3c3d7da35217578eb (#18344)

diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst
index 3b7a9d105d05954edaee3d52116a0b0ce0779150..6e080c7033c7eefc9dbf12f5aa345aea46b62de6 100644 (file)
--- a/Doc/whatsnew/3.9.rst
+++ b/Doc/whatsnew/3.9.rst
@@ -398,6 +398,8 @@ Deprecated
 Removed
 =======
 
+* The erroneous version at :data:`unittest.mock.__version__` has been removed.
+
 * :class:`nntplib.NNTP`: ``xpath()`` and ``xgtitle()`` methods have been removed.
   These methods are deprecated since Python 3.3. Generally, these extensions
   are not supported or not enabled by NNTP server administrators.