diff --git a/MaintNotes b/MaintNotes
index 8b28c8902e..de86827564 100644
--- a/MaintNotes
+++ b/MaintNotes
@@ -101,7 +101,7 @@ from "master" at that point.  Obvious, safe and urgent fixes
 after a feature release are applied to this branch and
 maintenance releases are cut from it.  The maintenance releases
 are named with four dotted decimal, named after the feature
-release they are updates to; the last such release was 1.6.3.4.
+release they are updates to; the last such release was 1.6.4.1.
 New features never go to this branch.  This branch is also
 merged into "master" to propagate the fixes forward.