diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
index 5788e32da1c928..55e7d62b541597 100644
--- a/Doc/whatsnew/3.10.rst
+++ b/Doc/whatsnew/3.10.rst
@@ -1212,6 +1212,12 @@ 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
 ---------