SAN FRANCISCO (AP) — Opponents of California's bullet train have refiled a lawsuit against state legislation that allows high-speed rail money to be spent on electrification of Caltrain from south of San Jose to San Francisco.

In a new filing Thursday, opponents named the lead plaintiff as the state of California, rather than the California High-Speed Rail Authority, and also named state Finance Director Michael Cohen.

They're taking up a Sacramento judge's offer earlier this month to refile the lawsuit. He rejected their arguments in the case aimed at blocking California's $64 billion high-speed rail project.

The lawsuit challenges AB1889, signed into law last year by Gov. Jerry Brown. Opponents say it unconstitutionally allows high-speed rail bonds to be spent on Caltrain, violating the promises made to voters in 2008.