Manchester United midfielder Anderson has been rewarded for his improved form following a lengthy injury with a new four-and-a-half year contract at Old Trafford.
Anderson ruptured his cruciate ligament in a game against West Ham in February and since returning to action in September has made four Premier League starts.
"This is the best club to be at and I would like to thank everyone for the great support I have received over the years," Anderson told the club's official website. "I am looking forward to winning many more trophies with this club and I am so pleased to have signed a new contract."
Sir Alex Ferguson said: "We are delighted Anderson has signed a new contract. Anderson has developed tremendously since joining the club and he has fantastic potential at only 22 years of age, he is going to be a really top player."