diff --git a/docs/index.html b/docs/index.html
index 16cef20..966c514 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -28,7 +28,7 @@
     coverpage: true
   }
 </script>
-<script src="//unpkg.com/docsify/lib/docsify.min.js"></script>
+<script src="https://unpkg.com/docsify@4.11.3/lib/docsify.min.js"></script>
 <script>
   if (typeof navigator.serviceWorker !== 'undefined') {
     navigator.serviceWorker.register('sw.js')