REST API Version

It is important for you to check what version of the Stripe REST API you're currently consuming (via the dashboard). You can explicitly set the version you wish to use like so:

var stripe = require('stripe')('your api key');
stripe.setApiVersion('2013-08-13'); // latest as of 18th Oct 2013

Note: You do not need to set a version explicitly. If you don't set it the Stripe REST API will use your account's default, which you can view under your dashboard (Account Settings » API Keys). Setting a version explicitly via stripe.setApiVersion(...) does not affect your account's default version; it'll only affect the API you consume through that singular stripe instance.

Find more information here: stripe.com/docs/upgrades.