Kim Kardashian and Kanye West’s family is set to keep growing.

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The couple are expecting their fourth child, a boy, with a surrogate, Us Weekly and People report. ET Canada has reached out to Kardashian and West’s rep for comment, but they have not yet responded.

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Celebrating Saint with a Tarzan themed party 🍃

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Kardashian and West used a surrogate for their third baby, 11-month-old Chicago, after Kardashian suffered high-risk complications during her previous pregnancies with North, 5, and Saint, 3.

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Last year it was reported that the couple had one embryo left, and now Us reports the child is due in May.

Another source reportedly told the magazine that Kardashian has “always wanted four kids.”