diff --git a/public/index.html b/public/index.html
index 8416486..4272816 100644
--- a/public/index.html
+++ b/public/index.html
@@ -175,7 +175,7 @@ <h1>Annotorious | OpenSeadragon Example</h1>
       </p>
       <div id="openseadragon" style="width: 640px; height: 480px;"></div>
     </div>      
-    <script src="https://cdn.jsdelivr.net/npm/openseadragon@4.0/build/openseadragon/openseadragon.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/openseadragon@4.1/build/openseadragon/openseadragon.min.js"></script>
     <script src="openseadragon-annotorious.min.js"></script>
   </body>
 </html>