diff --git a/postcss.config.js b/postcss.config.js
index 26eecf6..9f80867 100644
--- a/postcss.config.js
+++ b/postcss.config.js
@@ -6,7 +6,7 @@ const header = `@charset "UTF-8";
 /*!
  * animate.css - ${homepage}
  * Version - ${version}
- * Licensed under the MIT license - http://opensource.org/licenses/MIT
+ * Licensed under the MIT license - https://opensource.org/licenses/MIT
  *
  * Copyright (c) ${new Date().getFullYear()} ${author.name}
  */