Joost Posthuma extended his contract with Rabobank according to wielerupdate.nl. The 27 year-old Dutchman's contract was to expire at the end of next year, but now will run through 2011.
Posthuma's best result came at the KBC Driedaagse De Panne-Koksijde in April when he won the final time trail and general classification.
He also took second and won the overall at the Tour of Luxembourg in June.