Congratulations are in order for Caitlyn Jenner's daughter Cassandra Marino!

The 36-year-old — who is also known as Casey Jenner — and her husband, Mike Marino, welcomed their third baby together, and it's a boy.

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Casey confirmed her son's arrival on her private Instagram account.

Posted by Cassandra Marino on Monday, August 18, 2014

"He made it! One day before his due date and on Mike's dad's birthday," she wrote. "I am elated and exhausted but a super happy non-pregnant mama."

According to Us Weekly, they named the child Luke.

Casey and Mike are also parents to two daughters, Isabella and Francesca. It was first revealed in April that they were expecting a new addition.

We are so happy for them!