diff --git a/Misc/NEWS b/Misc/NEWS
index 76ae737..835bb92 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -78,6 +78,10 @@
 
 Library
 -------
+
+- Issue #7970: email.Generator.flatten now correctly flattens message/rfc822
+  messages parsed by email.Parser.HeaderParser.
+
 - Issue #7361: Importlib was not handling bytecode files less than 8 bytes in
   length properly.