diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
index 5b5903cb059356..92247e153627d0 100644
--- a/Doc/whatsnew/3.10.rst
+++ b/Doc/whatsnew/3.10.rst
@@ -1137,6 +1137,9 @@ identification from `freedesktop.org os-release
 pprint
 ------
 
+:func:`pprint.pprint` now accepts a new ``underscore_numbers`` keyword argument.
+(Contributed by sblondon in :issue:`42914`.)
+
 :mod:`pprint` can now pretty-print :class:`dataclasses.dataclass` instances.
 (Contributed by Lewis Gaul in :issue:`43080`.)
 
diff --git a/Misc/ACKS b/Misc/ACKS
index b023bcb6d72fd3..0cb738b3a12ee4 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1821,6 +1821,7 @@ Andi Vajda
 Case Van Horsen
 John Mark Vandenberg
 Kyle VanderBeek
+Wm. Keith van der Meulen
 Eric N. Vander Weele
 Andrew Vant
 Atul Varma