A LEE Potts penalty propelled the Gingerbreads a step closer to a play-off berth.
The last gasp spot kick was enough to give Grantham all three points at Romulus on Saturday.
Town are now up to sixth place in the Evo-Stik League Division One South.
Grantham’s next game is at home to Rushall Olympic on Saturday. Kick-off at The Meres is 3pm.