California’s death penalty system, dormant for nine years, might soon move slowly toward resuming executions.

As part of a court settlement reached on Tuesday, the state’s corrections department agreed to unveil a new execution method by the fall that will be tied to the outcome of a U.S. Supreme Court ruling expected sometime this month in a challenge to Oklahoma’s lethal injection protocol.

While California is still far from executing one of the 750 condemned killers on death row, the development marks movement on the issue for the first time in years. There are at least 17 inmates on death row who have exhausted their legal appeals and would be eligible for execution dates.

State prison officials resolved a lawsuit filed last year by the families of victims of condemned killers who argued the state has a legal obligation to implement an execution method. A Sacramento judge earlier this year found the state should be required to move forward in a case brought by two families, including former UCLA and NFL star Kermit Alexander, whose mother, sister and nephews were murdered 31 years ago by a man now on death row.

Death penalty supporters have accused state leaders such as Gov. Jerry Brown and Attorney General Kamala Harris of dragging their feet in getting executions back on track. The state has not had an execution since 2006 as a result of legal challenges to its lethal injection method.

Several years ago, the courts invalidated one state effort to revise its three-drug execution method, prompting California to explore switching to a single lethal drug as other states have done. But the state had not made progress until Tuesday’s settlement.

The Supreme Court is expected to clarify the legality of lethal injection methods in the case out of Oklahoma, which still has a three-drug procedure. Deborah Hoffman, spokeswoman for the California corrections department, confirmed that the prison system, which has been developing its regulations, will submit its new single drug execution method within 120 days of the Supreme Court’s ruling.

Lawyers for the families said it “made sense” for California to await that ruling. Kent Scheidegger, legal director of the Criminal Justice Legal Foundation, said he expects the state to adopt a single drug method using a sedative he maintains can be obtained.

However, states around the country, including California, have encountered problems securing supplies of execution drugs because drug manufacturers have refused to sell the drugs to prisons.

In addition, some states continue to abandon the death penalty. Nebraska just scrapped it last week. Death penalty foes say any revised lethal injection method will just get tied up in legal challenges again.

“It’s a waste of everyone’s time and money,” said Ana Zamora, criminal justice policy director for the American Civil Liberties Union. “Any effort to change the execution procedure is doomed to fail.”

Howard Mintz covers legal affairs. Contact him at 408-286-0236 or follow him at Twitter.com/hmintz