diff --git a/WHATSNEW b/WHATSNEW
index fa3825eed..5f8828cc0 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -87,6 +87,9 @@ Fixed bugs:
 * The index created by <jar> didn't conform to the spec as it didn't
   include the top-level entries.  Bugzilla Report 16972.
 
+* <tar> and <zip> didn't honor the defaultexcludes attribute for the
+  implicit fileset.  Bugzilla Report 18637.
+
 Other changes:
 --------------
 * Shipped XML parser is now Xerces 2.4.0