diff --git a/license.html b/license.html
index f59f9fa720a66bbad637dc64c24052927f23f95f..c9b819d05c994ec4a12bd100bc4f089f503b16fa 100644
--- a/license.html
+++ b/license.html
@@ -1,2 +1,2 @@
-<a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-nc-sa/4.0/88x31.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">Kalman Filters and Random Signals in Python</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="https://github.com/rlabbe/Kalman-Filters-and-Random-Signals-in-Python" property="cc:attributionName" rel="cc:attributionURL">Roger Labbe</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</a>.<br />Based on a work at <a xmlns:dct="http://purl.org/dc/terms/" href="https://github.com/rlabbe/Kalman-Filters-and-Random-Signals-in-Python" rel="dct:source">https://github.com/rlabbe/Kalman-Filters-and-Random-Signals-in-Python</a>
+<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by/4.0/88x31.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">Kalman Filters and Random Signals in Python</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="https://github.com/rlabbe/Kalman-Filters-and-Random-Signals-in-Python" property="cc:attributionName" rel="cc:attributionURL">Roger Labbe</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</a>.<br />Based on a work at <a xmlns:dct="http://purl.org/dc/terms/" href="https://github.com/rlabbe/Kalman-Filters-and-Random-Signals-in-Python" rel="dct:source">https://github.com/rlabbe/Kalman-Filters-and-Random-Signals-in-Python</a>