A bill backed by Gov. Gavin Newsom as part of a broader plan to end gas price hikes was given final approval by the California State Assembly in a special session Monday afternoon and now heads to the governor’s desk for his signature.

Gov. Gavin Newsom on Monday signed a bill that could force oil refineries in the state to hold onto a minimum amount of fuel — a policy he aggressively pushed lawmakers to pass in a special session as a way to prevent future spikes in gasoline prices.