The deal will see the actor remain in the main cast of CSI: Crime Scene Investigation as Nick Stokes for at least another season, says The Hollywood Reporter.
The current season's finale will air on May 9, while a 13th season of CSI is due to premiere in late 2012.
CSI has seen several main cast changes for its 12th season, with Ted Danson joining the cast as the new team leader.
Elisabeth Shue also became a new main cast member after she replaced the outgoing Marg Helgenberger.
Brooke Nevin was recently cast as Danson's daughter Maya in the upcoming finale.
George Eads married his partner Monika Casey in August last year.