diff --git a/wagtail/admin/static_src/wagtailadmin/js/upgrade_notify.js b/wagtail/admin/static_src/wagtailadmin/js/upgrade_notify.js
index 4162e6117..55c2141c5 100644
--- a/wagtail/admin/static_src/wagtailadmin/js/upgrade_notify.js
+++ b/wagtail/admin/static_src/wagtailadmin/js/upgrade_notify.js
@@ -39,7 +39,7 @@ $(function() {
         try {
             if (data.version && gtVersion(data.version, currentVersion)) {
                 var $container = $('.panel-upgrade-notification')
-                $('.newversion', $container).html(data.version);
+                $('.newversion', $container).text(data.version);
                 $('.releasenotes-link', $container).attr('href', data.url);
                 $container.show();
             }