diff --git a/Doc/whatsnew/whatsnew23.tex b/Doc/whatsnew/whatsnew23.tex
index 2523e3c5588..c0c6abe0bb8 100644
--- a/Doc/whatsnew/whatsnew23.tex
+++ b/Doc/whatsnew/whatsnew23.tex
@@ -1884,6 +1884,7 @@ added to \class{timedelta} instances.
 
 For more information, refer to the \ulink{module's reference
 documentation}{http://www.python.org/dev/doc/devel/lib/module-datetime.html}.
+(Contributed by Tim Peters.)
 
 
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