update NEWS for #17531
diff --git a/Misc/NEWS b/Misc/NEWS
index d9e023f..8a8ec99 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,7 +10,7 @@
 -------
 
 - Issue #17531: Fix tests that thought group and user ids were always the int
-  type.
+  type. Also, always allow -1 as a valid group and user id.
 
 
 What's New in Python 2.7.4 release candidate 1