Alec Baldwin and his wife, Hilaria, made a surprise announcement Friday afternoon: They’re having a baby.

The yoga instructor and author, 33, announced her pregnancy in an Instagram post with the caption, “Our Baldwinitos are getting a new teammate this spring.”

On Saturday, the couple shared a video on Instagram revealing that the new baby will be a boy.

The Baldwins already have three children together, Carmen, Rafael and Leonardo, and Alec has a daughter, Ireland, 22, with ex-wife Kim Basinger.

“I’m gonna make them a special cake to tell them if it’s a boy or girl,” Hilaria added in the caption. She told fans she would be announcing the new baby’s gender around midday on Saturday, Nov. 4.

Ready for it??? Watch and see...girl or boy! And swipe for more pics! We had so much fun doing it this way ❤️

A post shared by Hilaria Thomas Baldwin (@hilariabaldwin) on

Alec reposted the photo, which shows the couple on the floor with their children and dog, to his own account with the caption, “Here we go again…”

Hilaria confirmed that the group is “excited” to welcome the new baby into the family.