Celtic defeated Heart of Midlothian 1-0 on Thursday evening to close the gap on cinch Premiership leaders Rangers to four points.
Kyogo Furuhashi scored the only goal from an Anthony Ralston cross after 33 minutes against Robbie Neilson's side, who are third in the table.
Next up for Celtic is a trip to Tannadice on Sunday, with Hearts away to Livingston.