Gillingham manager Mark Stimson admitted his club has been handed a massive financial fillip following their victory in the League Two play-off final.
Simeon Jackson's last-minute header was enough to edge out Shrewsbury Town 1-0 at Wembley and send the Kent club back into League One.
"It's massive financially," admitted Stimson. "There are several local teams we can attract and with Leeds, Norwich and Southampton coming down we will have some big gates.
"We brought over 30,000 fans to Wembley today and we need to attract as many of them as we can every week.
"We need to improve the squad and we have to try and become a good League One side."
Meanwhile, Stimson believes he has finally silenced his critics after he was at the helm when they were relegated from League One last season.
"I'm someone who loves to prove people wrong. We've proved we should be in League One," he added.
"Fans have got the right to criticise, but sometimes in the season it's not been constructive criticism."