After examining the festival site, Download organisers have made an extra 2,500 camping tickets available for this year's event.
With just over a week to go until the festival kicks off, bosses are confident that these additional passes will get snapped but, so fans wishing to go should act fast.
Those who already have weekend arena tickets but were unable to get camping passes are advised to call Ticketmaster on 08444 999 999.
Faith No More, Slipknot and Def Leppard will headline Download Festival 2009 which will take place at Donington Park, Castle Donington from 12-14 June.
Passes for the festival are on sale now priced at £135 for a weekend camping pass. Day tickets and Guest Area passes are also on sale.