Ryan Reynolds shared the name of his youngest child with wife Blake Lively on Monday: Olin.

The actor revealed the name while thanking his family at the “Deadpool & Wolverine” premiere in New York.

“I want to start by saying thank you to my wife Blake, who is here,” he said. “I want to thank my kids — James, Inez, Betty, Olin — who are here. I hope that, if I’m lucky, this moment will be the most traumatic thing — that is, the contents of this movie — that happens in your wondrous life.”

Reynolds and Lively welcomed their newest baby in February 2023. They hadn’t shared any details about the child yet, including its sex. The couple typically keep their children out of the spotlight and off social media.

Their eldest child, James, is 9, Inez is 7 and Betty is 4.

During an appearance on “Today” in May, Reynolds was asked about the baby’s name, and whether it was buried somewhere in Taylor Swift’s new album, “The Tortured Poets Department.”

Swift, who is close friends with Lively, mentioned the names James, Inez and Betty in her 2020 album “Folklore.”

“We always wait for Taylor to tell us what the child’s name is, and I’ll say this: We’re still waiting,” Reynolds quipped at the time.