diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
index 7340dba21ce..c853ffd3a97 100644
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -558,7 +558,8 @@ base64
 
 The encoding and decoding functions in :mod:`base64` now accept any
 :term:`bytes-like object` in cases where it previously required a
-:class:`bytes` or :class:`bytearray` instance (:issue:`17839`).
+:class:`bytes` or :class:`bytearray` instance.  (Contributed by Nick Coghlan in
+:issue:`17839`.)
 
 
 colorsys