Mary Lynn Rajskub, who plays computer whiz Chloe O'Brian on Fox's 24, is pregnant, she tells PEOPLE.
Rajskub, 36, and her live-in boyfriend Matthew Rolph, 27, a personal trainer, are expecting their first child at the end of the summer.
"With the strike going on, I had to keep busy!" Rajskub jokes. "We are thrilled and couldn't be more excited."
Rajskub recently attended the Sundance Film Festival promoting Sunshine Cleaning, in which she costars opposite Amy Adams and Emily Blunt. On Friday, Rajskub will make an appearance walking in the Red Dress Fashion Show to benefit The Heart Truth in New York.