diff --git a/README.md b/README.md
index 29b6866..735f108 100644
--- a/README.md
+++ b/README.md
@@ -11,3 +11,5 @@ Encountered new code path with input bytes:
 Encountered new code path with input bytes:
 	bytes: "0\xF4\xDA\x8D\xD83\xD8\xDE\xDD\x9F"
 ```
+
+All files licensed [CC0](https://creativecommons.org/publicdomain/zero/1.0/).