diff --git a/README.md b/README.md
index b7e7fb1cc8a04556caa052e824e05aa464fa7c09..cd6bafe18f2c2167116efb91920e458af99b2630 100644
--- a/README.md
+++ b/README.md
@@ -111,4 +111,4 @@ Then there is a very simple API :
 Both API calls return a json object.
 
 ## Licence
-TODO but will be open source
+GPL v3, see [LICENSE.md](LICENSE.md)