diff --git a/lib/mbcel.h b/lib/mbcel.h
index 00c5fe0..031cb49 100644
--- a/lib/mbcel.h
+++ b/lib/mbcel.h
@@ -3,7 +3,7 @@
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
+   published by the Free Software Foundation; either version 3 of the
    License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,