diff --git a/core-elements.html b/core-elements.html
index b0b640d..c7137f6 100644
--- a/core-elements.html
+++ b/core-elements.html
@@ -36,6 +36,7 @@
 <link rel="import" href="../core-localstorage/core-localstorage.html">
 <link rel="import" href="../core-media-query/core-media-query.html">
 <link rel="import" href="../core-menu/core-menu.html">
+<link rel="import" href="../core-menu/core-submenu.html">
 <link rel="import" href="../core-menu-button/core-menu-button.html">
 <link rel="import" href="../core-meta/core-meta.html">
 <link rel="import" href="../core-overlay/core-overlay.html">