The social media network formerly known as Twitter has announced that it is retiring the Twitter.com domain on November 10. That probably won’t mean much to most people’s day-to-day use, with one big exception: security.

The X Safety account posted a message that says users who use a physical security key or virtual passkey as their two-factor authentication (2FA) method will need to re-enroll their key to continue accessing the site. After November 10, the account reports, accounts that haven’t re-enrolled will be locked. The account says the change “only impacts Yubikeys and passkeys,” so other 2FA methods should continue working properly.

You can re-enroll your existing security key, remove it, or enroll a new one by heading over to your profile, then Settings and privacy > Security and account access > Security > Two-factor authentication. To add or change a passkey, you’ll need to go back a page to the Security settings, flip the Passkey toggle, and follow the prompts.

While security keys are physical devices that either plug in or connect wirelessly to your device, passkeys merely use your device’s existing biometrics (Face ID or Touch ID) to authenticate your account without typing a password every time. The process takes just a few seconds.