US Secretary of the Treasury Jacob Lew will place 19th century abolitionist Harriet Tubman on the $20 bill in a symbolic makeover. This will be the first in a series of changes coming to U.S. currency.

Tubman will be the first woman on American paper currency since Martha Washington’s portrait was briefly on the $1 silver certificate in the late 1800s.

Initially, Lew had planned on putting a woman on the face of the $10 bill. The NY Times reports that while Alexander Hamilton would stay on the $10, and Abraham Lincoln on the $5s, images of women would be added to the back of both. Andrew Jackson, the nation's seventh president, will be moved to the rear of the $20 bill in a smaller image.

The full redesigns will be unveiled in 2020 and will not go into wide circulation until later in the decade, starting with the new $10 note.