’Tis the season! No, not that one—don’t toddle off to the mall just yet. It’s the pre-winter driving season, meaning refiners are boosting butane prices as they stock up for their winter gasoline blends.

Also spreading joy was propane, which vaulted to its highest price point in almost three years as the hypothetical NGL barrel closed in on highs for the year at both hubs in the past week.

In the past week, ethane came within one-tenth of a cent per gallon (gal) of its high for 2017 at Mont Belvieu, Texas, set four weeks ago. The butanes and C5+ had their strongest price showing since Super Bowl week, almost eight months ago.