diff --git a/index.html b/index.html
index d43e3ba..71f93cd 100644
--- a/index.html
+++ b/index.html
@@ -56,7 +56,7 @@
     text-align: center;
 }
     </style>
-    <script src="https://www.jsdelivr.com/package/npm/pdfjs-dist"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/4.1.392/pdf.min.mjs"></script>
 </head>
 <body>
     <header>
