To add another baby to the growing “It’s Always Sunny in Philadelphia” baby boom, Kaitlin Olson and husband Rob McElhenney just welcomed a baby boy!

Baby Leo Grey McElhenney was born on 1:15 a.m. on Thursday morning (April 5) via home birth.

“We are overjoyed,” the couple tells People Magazine.

This is the second baby for the couple who were married on September 2008. Baby Leo joins his big brother, 19-month-old Axel Lee.

Congratulations to the family!