diff --git a/config/plugins/interactive_environments/common/templates/ie.mako b/config/plugins/interactive_environments/common/templates/ie.mako
index ed4713d7636..baf016b03bc 100644
--- a/config/plugins/interactive_environments/common/templates/ie.mako
+++ b/config/plugins/interactive_environments/common/templates/ie.mako
@@ -27,6 +27,7 @@ require.config({
         "plugin" : app_root + "js/",
         "interactive_environments": "${h.url_for('/static/scripts/galaxy.interactive_environments')}",
     },
+    urlArgs: "v=${app.server_starttime}",
 });
 
 window.onbeforeunload = function() {