Jason Shackell's last-gasp header saw Lincoln strengthen their grip on top spot in Sky Bet League Two as the Imps secured a 2-1 win over MK Dons.
The former Derby defender headed home in the fifth minute of added time as the Imps completed a stunning turnaround.
Shay McCartan struck on 72 minutes to cancel out substitute Rhys Healey's opener for the Dons eight minutes earlier.
Lincoln had the first chance when McCartan's acrobatic effort was tipped over by goalkeeper Lee Nicholls.
Imps goalkeeper Josh Vickers was called into action after27 minutes when he produced a fine save to keep out Ryan Watson's effort.
McCartan went close again five minutes before the break when he just beat the on-rushing Nicholls to the ball, but could only poke his effort over the crossbar.
Healey, just six minutes after coming off the bench, broke the deadlock six minutes later with a powerful finish.
Lincoln levelled when John Akinde's knockdown was smashed home by McCartan before Shackell rose to head home Bruno Andrade's corner to send the Sincil Bank crowd wild.