diff --git a/README.md b/README.md
index da349a7..95b3164 100644
--- a/README.md
+++ b/README.md
@@ -698,3 +698,9 @@ Besides libraries, there're [Collection on Codepen](http://codepen.io/collection
 # Contributing
 
 Contributions welcome! Read the [contribution guidelines](CONTRIBUTING.md) first.
+
+# License
+
+[![CC0](http://i.creativecommons.org/p/zero/1.0/88x31.png)](http://creativecommons.org/publicdomain/zero/1.0/)
+
+To the extent possible under law, [chencheng](https://github.com/sorrycc) has waived all copyright and related or neighboring rights to this work.