Andrew Geggan scored Dunfermline's decisive goal as they beat Airdrieonians at East End Park.
The first half was a scrappy affair, with neither team threatening to take the lead but the game came to life after half-time.
The Pars took the lead 10 minutes after the break when Stephen Husband unleashed a right-footed strike that flew past Airdrieonians shot-stopper Scott Gallagher.
The Diamonds hit back one minute later when Liam Coogans found the bottom corner of the net from close range after good work from William McLaren.
Jim Jefferies' side sealed the points when Geggan fired in four minutes from time to put his side within two points of the Scottish League One summit.
Dunfermline: Scully, Millen, Johnston, Morris, Whittle, Falkingham, Husband, Byrne (Wallace 71), Geggan, Robert Thomson (Ryan Thomson 81), Moore (Smith 62).
Subs Not Used: Ferguson, Young, Goodfellow, El Bakhtaoui.
Goals: Husband 56, Geggan 86.
Airdrieonians: Gallagher, Buchanan, McCormack, Evans, Patrick Boyle, Bain, Hardie, Sinclair, Blockley, Coogans, Coult (McLaren 50).
Subs Not Used: Watt, Duncan, Drummond, Cadden.
Booked: Buchanan, Patrick Boyle.
Goals: Coogans 57.
Ref: Matt Northcroft