1 files changed, 3 insertions, 0 deletions

diff --git a/README.org b/README.org
index 9afb7d4..54d6c02 100644
--- a/README.org
+++ b/README.org
@@ -44,3 +44,6 @@ function:
 
 #+END_SRC
 
+** license
+
+gnu general public license version 3 or higher.