The Pilgrims moved to within a point of leaders Basford United following a 3-0 win over Mansfield Town at Brooksby Melton College.
United's other goal came courtesy of an own goal.
Boston (4-3-3): Harry Payne; James Gordon, Jack Withers, Bailey Forth, Callum Rodger; Jordan Tate (Jenson Ball 70), Harry Vince, George Hobbins; Ben Lawrence (Jack Brown 55), Liam Adams, Haydn Havard.