diff --git a/mes/module/mes/guile/module.mes b/mes/module/mes/guile/module.mes
index b048e97b..3a2ffa74 100644
--- a/mes/module/mes/guile/module.mes
+++ b/mes/module/mes/guile/module.mes
@@ -3,7 +3,7 @@
 ;;; GNU Mes --- Maxwell Equations of Software
 ;;; Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007
 ;;; Free Software Foundation, Inc.
-;;; Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+;;; Copyright © 2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 ;;;
 ;;; This file is part of GNU Mes.
 ;;;