Aston Villa loanee Jacob Ramsey scored the only goal as Doncaster won 1-0 against hosts MK Dons, who had won their three previous home games yet who rarely threatened.
Rovers chief Darren Moore stuck to his mantra of not talking about the play-offs but he did praise his match-winner.
Ramsey struck midway through the second half – his third goal since joining in January – when he met Jon Taylor’s cross with a super right-footed finish.
“Jacob Ramsey has an ability to arrive at the right time into the box and get a really clean contact with the ball, and he should be pleased with his development,” said a delighted Moore.
The Rovers manager was equllay happy about the quality of his side’s defending. “MK Dons have a tremendous home record so for us to come here and stifle them in possession is really pleasing,” he continued.
“MK are a team making headway in the division and they play good football, they have a style and credit to Russell Martin and his team for what they are doing.
“We took our chance and stayed resolute in our defending so it is a very creditable three points for the players.”
Of their upward momentum, he said: “We are not in the play-offs yet so I will not talk about it at the moment, as we also have a lot of work to do. We are trying to get some momentum but we just have to move to the next game.”
Milton Keynes Dons: Nicholls, Brittain, Williams, Moore-Taylor (Reeves 86), Lewington, Houghton, Thompson (Gladwin 75), Kasumu (Mason 59), Gilbey, Morris, Healey. Unused substitutes: Walsh, Poole, Fisher, McGrandles.
Doncaster Rovers: Dieng, Halliday, Wright, Anderson, Amos, Sheaf (Gomes 71), Whiteman, Sadlier, Ramsey (Blair 87), Ennis (Taylor 56), Cole. Unused substitutes: Jones, Baptiste, Lokilo, Coppinger.
Referee: C Boyeson (E Yorkshire).