Newport stalled Accrington's title-winning celebrations with a 2-1 win at Rodney Parade.
Stanley have already been promoted but goals from Padraig Amond and Frank Nouble were enough to give the Exiles victory.
Billy Kee grabbed a late consolation goal for the visitors but it was not enough.
Newport came close to opening the scoring when Amond was found unmarked in the penalty box only to head straight into the arms of goalkeeper Aaron Chapman.
But Amond did put the Exiles into the lead with a powerful...