Americans have applied for passports en masse this year—more than 21 million new little blue books were projected, says the State Department—and the number is expected to match that in 2018.

Why the rush? A lot of passports were up for renewal: Remember in 2007, how the government told us we needed passports or passport cards to visit Canada, Mexico, or the Caribbean? Those only have a shelf life of ten years, which brings us to...now. Add to that the number of Americans who'll need passports to fly across the U.S. because of the Real ID Act. (More on that a minute.)

So what do you need to know in order to leave the country in 2018?

You can renew online! Eventually...

The passport renewal process is getting an overhaul: Starting mid-2018, a new platform will let you renew your passport online, says Carl Siegmund, community relations officer for passport services at the State Department’s Bureau of Consular Affairs. This could mean the end of those late-night trips to Walgreens photo booths to rush off your application the next morning. “We’ve got to be future-focused,” Siegmund said during a digital government symposium in Washington, D.C. “We’re trying to move from paper to digital."