diff --git a/README.md b/README.md
index 37bf48c..6153150 100644
--- a/README.md
+++ b/README.md
@@ -10,3 +10,6 @@
 
 ## Example build:
 ![buzzer_assemlied](buzzer.jpg)
+
+## License
+CC-BY-SA 4.0 by "L3D <l3d@c3woc.de>" and R3L.