Town secured a vital win over their rivals.
Athlone Town secured victory over Longford Town in the First Division over the weekend.
Sean O'Connor's side secured a 2-1win in El Classico to lift them up to eighth in the league standings.
Will Smith opened the scoring in the 14th minute, before Gradi Lomboto doubled his side's lead in the 37th minute.
Longford missed a huge opportunity to equalise when Dean Williams' penalty was saved by Brendan Clarke, with Town also missing a second-half penalty through Peter Grogan.
Longford eventually pulled one back in the 77th minute through substitute Stefan Ugbesia, but Town held on to secure all three points.
They now turn their attention to the clash with Waterford in the FAI Cup this weekend.
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