diff --git a/COPYRIGHT.txt b/COPYRIGHT.txt
index 693ca01b0946d170e8eb877ab6ffee5539ba3d3c..e98347441a00afbe68b53021667ab73112d01ec9 100644
--- a/COPYRIGHT.txt
+++ b/COPYRIGHT.txt
@@ -3,7 +3,8 @@ All Drupal code is Copyright 2001 - 2010 by the original authors.
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation.
+the Free Software Foundation; either version 2 of the License, or (at
+your option) any later version.
 
 This program is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY