LAS VEGAS (KTNV) — United Airlines my soon offer new gender options for passengers when they book their flight.

The airlines says “unspecified” and “undisclosed” gender options will be available in the next few weeks in addition to the options “male” and “female.”

Other airlines say they are working on adding more gender options, including Alaska Airlines, American Airlines, Delta Airlines and Southwest Airlines.

The Transportation Security Administration says the ID you use must have the same gender identification at your ticket.