Fix Issue9753: socket.dup() does not always work right on Windows
diff --git a/Misc/NEWS b/Misc/NEWS
index 4053dd7..45e27c6 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -155,6 +155,9 @@
 Library
 -------
 
+- Issue #9753: Fixed socket.dup, which did not always work correctly
+  on Windows.
+
 - Issue #7005: Fixed output of None values for RawConfigParser.write and
   ConfigParser.write.