diff --git a/index.html b/index.html
index 02f9ae289d..b560d7789e 100644
--- a/index.html
+++ b/index.html
@@ -27,6 +27,8 @@
     <script src="https://unpkg.com/leaflet/dist/leaflet.js"></script>
     <!-- Include Leaflet GPX plugin -->
     <script src="https://unpkg.com/leaflet-gpx/gpx.js"></script>
+    <!-- Include Leaflet Omnivore plugin -->
+    <script src="https://unpkg.com/leaflet-omnivore@0.3.4/leaflet-omnivore.min.js"></script>
 </head>
 <body>
     <div id="map"></div>
