diff --git a/README.md b/README.md
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@@ -3,4 +3,9 @@
 
 Python library based on the [Adafruit Python Library for DC + Stepper Motor HAT](https://github.com/adafruit/Adafruit-Motor-HAT-Python-Library)
 
-Python library for interfacing with the 640 Mk1 board for Raspberry Pi to control DC motors with speed control and Stepper motors with single, double, interleave and microstepping.
+#License
+
+Designed by Dark Water. Distributed under a Creative Commons Attribution, Share-Alike license.
+Development kits based on this product should be distributed under a similar license.
+Commercial products using the 640 boards as a reference design need not comply with this license; further questions can be sent to team@darkwater.io.
+Check license.txt for more information.