DOC add entry in whats new for numerical instability in mutual information
@@ -21,6 +21,14 @@ and later.
Changelog
---------
+:mod:`sklearn.metrics`
+......................
+
+- |Fix| Fix numerical stability bug that could happen in
+ :func:`metrics.adjusted_mutual_info_score` and
+ :func:`metrics.mutual_info_score` with NumPy 1.20+.
+ :pr:`19179` by `Thomas Fan`_.
+
:mod:`sklearn.semi_supervised`
..............................
