diff --git a/demo/index.html b/demo/index.html
index 26fe4ac..7654e09 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -3,7 +3,7 @@
 	<head>
 		<title>Package.json validator</title>
 		<link
-			href="http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.3.1/css/bootstrap.min.css"
+			href="http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/5.3.3/css/bootstrap.min.css"
 			rel="stylesheet"
 		/>
 		<style type="text/css">
