HOLLYWOOD, Calif. — There's about to be another new kid on the block.

Singer Joey McIntyre and his wife, Barrett, are expecting another son.

"I still can't get over it," the 36-year-old New Kids on the Block singer tells People. "We feel so blessed."

The couple, who married in 2003, are already proud parents to a 20-month-old son named Griffin.

McIntyre and his wife will be welcome their newest addition in December, but don't expect that to be the last of the couple's pregnancies.

"I think we have a deal to keep going until we have a girl," said the pop star. "That's what my wife says."