Market Rasen Town 1 CGB Humbertherm 3
Goals from Joe Stuart, Daniel Trott and Robin Beecroft helped the Therm climb out of the bottom two of the league with victory at Rasen.
An Ian Williams strike was not enough to stop Town slipping to their seventh league defeat of the season.
The result means Market Rasen drop into the bottom two but with two games in hand over Humbertherm and one over Cleethorpes AKP in ninth.
Rasen next welcome bottom club Louth Town Reserves to Rase Park on January 10.