Massachusetts gas prices are dropping amid optimism over a potential U.S.-Iran peace deal. 

AAA says the statewide average is about four-dollars-39-cents a gallon.  That is down about nine cents from a week ago. 

Analysts say crude prices have fallen sharply as talks continue over reopening the Strait of Hormuz. 

Gas prices remain well above last year's average, but drivers are seeing signs of relief at the pump.