Lance Armstrong asked the Texas Supreme Court on Friday to stop a Dallas company from trying to force him to pay back about $12 million in bonuses it paid him for winning the Tour De France.

SCA Promotions sued Armstrong last year after he admitted using performance enhancing drugs during his career.

The dispute dates to 2005 when SCA investigated allegations of drug use and Armstrong gave sworn testimony denying doping.

The company arbitration eventually settled in arbitration and agreed to pay him.

The original arbitration panel has agreed to reopen the case. Armstrong's attorneys say Texas law won't allow parties to revisit voluntary settlements.

Lower courts have refused to stop the case. Now Armstrong is appealing to the state's highest civil court.

Armstrong has faced several lawsuits since admitting last year that he used steroids and other performance-enhancers to win the Tour de France every year from 1999-2005.