diff --git a/src/main/webapp/App.html b/src/main/webapp/App.html
index d268910..2d53f78 100644
--- a/src/main/webapp/App.html
+++ b/src/main/webapp/App.html
@@ -12,9 +12,9 @@
 <script type="text/javascript" src="js/proj4js-compressed.js"></script>
 <script type="text/javascript" src="js/EPSG.js"></script>
 <script type="text/javascript" src="js/OpenLayers.js"></script>
-<script type="text/javascript" src="js/TopoJson.js"></script>
-<script type="text/javascript" src="js/jszip.min.js"></script>
-<script type="text/javascript" src="js/jszip-utils.min.js"></script>
+<script type="text/javascript" src="js/TopoJson.js" async></script>
+<script type="text/javascript" src="js/jszip.min.js" async></script>
+<script type="text/javascript" src="js/jszip-utils.min.js" async></script>
 
 
 <script type="text/javascript"