CONCORD, N.H. — Gas prices are increasing in northern New England.

GasBuddy shows that the average retail price went up 2.8 cents per gallon in New Hampshire to $2.17 a gallon. It went up 2.7 cents in Maine to $2.26, and a penny in Vermont to $2.26.

The national average of $2.25 has increased 3.3 cents in the last week. It stands 6.1 cents per gallon lower than a year ago.