Its a boy for Kim Kardashian and Kanye West .

The couple, who are expecting their fourth child together later this year via surrogate, are set to add a boy to their brood, People magazine reported on Tuesday .

Kardashian and West welcomed their third child, Chicago, by a gestational carrier last January . They have one embryo left for use and the sex is male, according to reports. Kardashian, who previously described surrogacy as the best experience, is reportedly working with a different gestational carrier for the baby boy.

Since they had another embryo, Kim and Kanye always knew they wanted to try and implant that embryo too, an unnamed source told People . They hoped to work with the same gestational carrier, but it didnt work out this time. They are working with a second carrier now that is pregnant and will give birth in the spring.