diff --git a/demo/index.html b/demo/index.html
index 07d0a7f..b441715 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -5,8 +5,8 @@
   <meta charset="UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
   <title>Document</title>
-  <link href="https://cdn.bootcdn.net/ajax/libs/quill/2.0.0/quill.snow.min.css" rel="stylesheet" />
-  <script defer src="https://cdn.bootcdn.net/ajax/libs/quill/2.0.0/quill.min.js"></script>
+  <link href="https://cdn.bootcdn.net/ajax/libs/quill/1.3.7/quill.snow.min.css" rel="stylesheet" />
+  <script defer src="https://cdn.bootcdn.net/ajax/libs/quill/1.3.7/quill.min.js"></script>
   <script defer src="https://cdn.jsdelivr.net/gh/hunghg255/quill-resize-image/dist/quill-resize-image.min.js"></script>
 </head>