diff --git a/README.md b/README.md
index dfeea45977..c470278607 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,7 @@ To contribute something to RIOT, please refer to the [development procedures](ht
 
 ## LICENSE
 * All sources and binaries that have been developed at Freie Universität Berlin are
-  licensed under the GNU Lesser General Public License version 2 as published by the
+  licensed under the GNU Lesser General Public License version 2.1 as published by the
   Free Software Foundation.
 * Some external sources, especially files developed by SICS are published under
   a separate license.