diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
index dd01c88d8ae6660..f93523a4c50a891 100644
--- a/Doc/whatsnew/3.10.rst
+++ b/Doc/whatsnew/3.10.rst
@@ -1223,6 +1223,12 @@ now call :func:`inspect.get_annotations` to retrieve annotations. This means
 also now un-stringize stringized annotations.
 (Contributed by Larry Hastings in :issue:`43817`.)
 
+itertools
+---------
+
+Add :func:`itertools.pairwise()`.
+(Contributed by Raymond Hettinger in :issue:`38200`.)
+
 linecache
 ---------