diff --git a/examples/mailbox/elements/mailbox.js b/examples/mailbox/elements/mailbox.js
index b1cf40a..e435b2e 100644
--- a/examples/mailbox/elements/mailbox.js
+++ b/examples/mailbox/elements/mailbox.js
@@ -1,3 +1,4 @@
+const dateformat = require('dateformat')
 const choo = require('../../../')
 
 module.exports = function () {