Aberdeen moved to within two points of second-placed Rangers with a game in hand with a 1-0 win against Dundee.
Dons captain Graeme Shinnie netted the game’s only goal 10 minutes before the break.
The victory moves the Dons four points above fourth-place Hibernian, who were held to a 1-1 draw by St Johnstone on Friday night.
It also closed the gap on Rangers, who were beaten 1-0 at home by Kilmarnock.
The Dons made two changes from the team that started Tuesday’s Scottish Cup win against Killie with Stevie May and Chidi Nwakali replacing Adam Rooney and Gary Mackay-Steven.
Dundee, beaten 4-0 at home by St Johnstone last weekend, made five changes with Glen Kamara and Paul McGowan back from suspension, while captain Darren O’Dea, Kevin Holt and Sofien Moussa returned to the side.
After an uneventful opening, Dundee defender Kevin Holt produced the game’s first shot on target but Freddie Woodman was equal to his volley with 17 minutes on the clock.
Kamara went closer moments later with a powerful effort that whistled past the post.
The Dons should have opened the scoring after 21 minutes when Josh Meekings cleared a Kenny McLean cross straight to the unmarked Shay Logan but the defender’s effort, which was heading wide, struck McLean with the assistant referee flagging for offside.
The home side survived a major scare with half an hour played when A-Jay Leitch-Smith beat the offside trap to race onto a searching pass from O’Dea but the Dark Blues forward was denied by the feet of Woodman.
The Dons made the breakthrough 10 minutes before the break, courtesy of some poor Dundee defending.
Dark Blues goalkeeper Elliott Parish flapped at a Ryan Christie cross under pressure from Niall McGinn allowing Shinnie to stroke home into an empty net.
McGinn almost doubled the lead in the opening minute of the second half but his left-footed volley from 12 yards out flew over the crossbar.
The Dons went close again after 54 minutes when Parish spilled Nwakali’s long-range drive but the Dundee stopper made amends by thwarting Christie on the follow-up.
Greg Stewart replaced Nwakali before May was denied by Parishh as the home side pressed for the second goal that would kill off Dundee.
Stevie May had a goal ruled out for a foul on Kevin Holt but it mattered not as the Dons held on for all three points.