diff --git a/lib/favicon.js b/lib/favicon.js
index c39df37b..9110aa58 100644
--- a/lib/favicon.js
+++ b/lib/favicon.js
@@ -1,3 +1,11 @@
+/**
+ * ISC License
+ * Copyright 2022 github.com/sudoaugustin/favecon
+ * Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
 import fetch from 'node-fetch';
 import { parse } from 'node-html-parser';
 import { TimeoutController } from 'timeout-abort-controller';