Actor Bobby Cannavale appeared on The Late Show with Stephen Colbert, revealing the exciting news that he just became a father after girlfriend Rose Byrne gave birth to a baby boy.

Appearing on the Feb. 5 episode, Cannavale said Byrne had the baby on Feb. 1 and he joked that he “didn’t do anything and I’m so tired.”

In addition to discussing the baby’s birth and his own eating habits, Cannavale revealed they named the baby Rocco and he “is doing great.”

Colbert also asked the proud father about the origin of the baby’s name, wondering if he was named after the Saint. Cannavale replied, “Actually, yeah, patron saint of the sick…pretty sure. Could be wrong. I’m tired.”

The couple, who have been together since 2012, were private about the pregnancy, but according to E! News, a source said that the couple was “very excited” about the new baby.

This is Byrne’s first child. Cannavale has an adult son from his previous marriage to Jenny Lumet.

Byrne and Cannavale have appeared in films together, including Annie and Spy.