Michael Phelps and his wife Nicole Johnson are going to have their own swim team soon.

The Olympic gold medalist announced on Instagram that the couple is expecting their third child, Entertainment Tonight reported.

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The photo shows their sons Boomer, 2, and Beckett, 13 months, and asks the question boy or girl?

Even Beckett's Instagram got into the game, saying "I'm not sure what this means but I was just told I'm promoted to Big Brother!!," Entertainment Tonight reported.

While Boomer asks if he'll have a brother or sister, E! reported.

Phelps was only 15 years old when he made his Olympic debut during the 2000 Sydney Olympic games, USA Today. He didn't medal then, but went on to win 23 gold medals and 28 overall, according to the newspaper.