Changelog • October 2017 development Our new Mastercard test number (2223 0031 2200 3222) helps you ensure your checkout flow properly handles cards starting with a 2. payments The Payment Request Button Element supports Apple Pay and the Payment Request API (including Google Pay) with a single integration. payments You can now update a Stripe PaymentRequest after it has been created. payments The Payment Request Button Element now exposes a click event, which enables you to detect and control when the browser payment sheet opens. radar You can now write custom Radar rules with CVC, ZIP code, and address verification.