Super-sub Lenell John-Lewis' last-minute strike secured a 2-1 win over Barnet to boost Lincoln's survival hopes.
Ismail Yakubu looked to have earned the Bees a point when he cancelled out Cian Hughton's first-half strike with a 75th minute header.
But John-Lewis had other ideas, heading in Joe Anderson's cross from 10 yards to secure only Lincoln's third win on their travels this season.
The home side were made to pay for some early missed chances after 30 minutes when visiting skipper Scott Kerr released Hughton and the 20-year-old fired across Jake Cole to grab the lead.
Lincoln needed an incredible double save from keeper Rob Burch to keep their lead intact - the former Spurs stopper denying Albert Adomah and John O'Flynn.
Barnet should have levelled on the hour only for Micah Hyde to nod a Ryan O'Neil cross over - but Yakubu's header did level proceedings 15 minutes from time.
But the Imps refused to give up and John-Lewis - who had only been on the field for seven minutes - gave them a dramatic last-gasp win.
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