The Sky Blues scored in injury time to secure all three points against AFC Wimbledon on Tuesday night, thanks to a Liam Walsh strike.
AFC Wimbledon had taken the lead after Walsh was adjudged to have brought down Marcuss Forss in the box and was awarded a penalty, which the striker converted.
City pulled one back through Jordy Hiwula midway through the first half, when he latched onto a through ball from Jordan Shipley.
Then, as the Sky Blues pushed for a winner, they eventually found it in the 93rd minute when Walsh slotted into the bottom corner.