Zac Hanson, Wife Expecting Baby No. 2

There’s another Hanson baby on the way!

Zac Hanson and his wife Kate are expecting their second child, and the rocker couldn’t be more thrilled, he tells PEOPLE.

“I am so excited about the new addition to our growing family and for the stories and inspiration this person will bring to the world,” says the drummer, 24 — one-third of the trio Hanson — who just released their latest album, Shout It Out.