# Update phone number used for SMS two-step authentication

If you’ve lost your phone or changed your phone number, you can update the number where SMS two-step authentication verification codes are sent.
### Unable to access the old phone number?
* Use a backup code to disable and re-enable two-step authentication.
* Remove two-step authentication from your account.
* Attempt to log in to [the Dashboard](https://dashboard.stripe.com/login). On the **We sent a text to your phone** panel where you'd enter the SMS verification code, select **Sign in another way** and follow the prompts.
### Still have access to the old phone number?
* Open the [Personal details page](https://dashboard.stripe.com/settings/user) on the Stripe Dashboard.
* Under the **Two-step authentication** section, click the "**...**" icon next to your current phone number.
* Select **Update**.
* Follow the prompt to update your phone number.
### Having other problems with SMS verifications?
Follow the [SMS verification code troubleshooting guide](/questions/text-message-%28sms%29-verification-code-isn-t-working-for-two-step-authentication).