diff --git a/Misc/NEWS b/Misc/NEWS
index 09ea7e3..9839903 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -75,6 +75,9 @@
 Library
 -------
 
+- Issue #5346: Preserve permissions of mbox, MMDF and Babyl mailbox
+  files on flush().
+
 - Issue #15219: Fix a reference leak when hashlib.new() is called with
   invalid parameters.