diff --git a/LICENSE b/LICENSE
index 17cb286..b1d3272 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,5 +1,5 @@
 GNU GENERAL PUBLIC LICENSE
-Version 2, June 1991
+Version 2 or-later, June 1991
 
 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA