Andretti Green Racing has confirmed that Marco Andretti will remain with the team in 2009.
The 21-year-old, who finished seventh in the standings last season and is spending the winter racing A1GP for Team USA, will tackle his fourth IndyCar season.
AGR will retain all four drivers next year, with Andretti returning alongside Tony Kanaan, Danica Patrick and Hideki Mutoh.
"I'm really looking forward to 2009 at Andretti Green Racing," said Andretti, who had been linked to other squads in the offseason. "As a team, we have a lot to prove next year and I want to be a big part of that.
"I learned a lot last year that I can build on going forward and I have every reason to believe that we can be a factor all year long."
Team boss Michael Andretti added: "It's good to get Marco's contract done. He is a big part of the future of our team and he's someone that we expect big things from in 2009.
"As a team, we are working very hard to improve our entire program for next season and Marco will play a big role in everything we achieve."