diff --git a/demos/video.html b/demos/video.html
index 808eae1..3c698c2 100644
--- a/demos/video.html
+++ b/demos/video.html
@@ -1,6 +1,7 @@
 <title>Video</title>
 <article>
   <video>
+    <source src="assets/dizzy.webm" />
     <source src="assets/dizzy.mp4" />
     <source src="assets/dizzy.ogv" />
   </video>