diff --git a/demo/index-gh.html b/demo/index-gh.html
index 6d3a7c50..17724a03 100644
--- a/demo/index-gh.html
+++ b/demo/index-gh.html
@@ -22,7 +22,7 @@
       frameborder="0" scrolling="0" width="130px" height="30px"></iframe>
     </nav>
 
-    <redoc scroll-y-offset="body > nav" spec-url='swagger.yaml'></redoc>
+    <redoc scroll-y-offset="body > nav" spec-url='swagger.yaml' lazy-rendering></redoc>
 
     <script src="main.js"> </script>
     <script src="./dist/redoc.min.js"> </script>
diff --git a/demo/index.html b/demo/index.html
index 8cb4b1d5..55ce64f3 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -22,7 +22,7 @@
       frameborder="0" scrolling="0" width="130px" height="30px"></iframe>
     </nav>
 
-    <redoc scroll-y-offset="body > nav" spec-url='swagger.yaml'></redoc>
+    <redoc scroll-y-offset="body > nav" spec-url='swagger.yaml' lazy-rendering></redoc>
 
     <script src="main.js"> </script>
     <script src="/webpack-dev-server.js"></script>