United Kingdom, April 17 -- Wilmer Valderrama and his fiancee Amanda Pacheco will welcome a baby boy this summer.

The 45-year-old 'That 70s Show' actor and Amanda, 34, are already parents to four-year-old daughter Nakano and they are excited to expand their family with a son later this year.

In a clip from his 'My Cultura's Dos Amigos' podcast, which he shared with PEOPLE, Wilmer told his co-host Freddy Rodriguez: "We're having a boy, and we couldn't be more excited to have the pair."

Wilmer added that he and Amanda have already decided on a name but he wanted to let his fiancee share it publicly when she is ready.

Wilmer and Amanda previously revealed that Nakano was the first person to know about the new baby.

Amanda told PEOPLE: "...