10/01/2009 at 11:00 AM EDT
Oliver Hudson and Erinn Bartlett are expecting their second child, his rep confirms to PEOPLE.
The Rules of Engagement
star, 33, and his actress wife, 36, are already parents to son Wilder Brooks, 2.
Of his son's arrival
in August 2007, Hudson said
, "It was crazy, the most insane, intense experience of my life. I went through every range of emotions...the fear and love, it was all coming down on me at once. It was intense."
The couple, who have been together for nine years, were married
in a beachside ceremony in Mexico in June 2006 attended by sister Kate Hudson
and mother Goldie Hawn.
Rules of Engagement
airs Mondays at 8:30 p.m. on CBS.
Reporting by JULIE JORDAN