DOC Adds whats new to 0.23.2 for bug fix
@@ -103,6 +103,12 @@ Changelog
average of multiple MSE values.
:pr:`17309` by :user:`Swier Heeres <swierh>`.
+:mod:`sklearn.pipeline`
+.......................
+
+- |Fix| :class:`pipeline.FeatureUnion` raises a deprecation warning when
+ `None` is included in `transformer_list`. :pr:`17360` by `Thomas Fan`_.
+
:mod:`sklearn.utils`
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