Premiership clubs will be allowed to name seven substitutes for games from next season.
That rule, which has existed for 12 years, means the League falls into line with major European leagues, UEFA and international tournaments.
The proposal to change was Tottenham's - and the club are delighted the rule amendment was approved by the league at a meeting of their chairmen.
Spurs chairman Daniel Levy told his club's official website: "We have promoted and lobbied for this rule change for some time and we are absolutely delighted our proposal was supported by member clubs.
"It's important there is a level playing field across all competitions. We constantly refer to ourselves as the most attractive footballing league in the world, but in order to both maintain that label and improve our competitive edge, it is important to give our managers and coaches greater choice on the substitutes bench, enabling them to be more creative tactically.
"That was the objective behind us bringing this proposal to the table.
"Additionally, it should also mean that younger players from the academy can be given an opportunity to break into the first team."
Sunderland chairman Niall Quinn said: "We voted for it.
"It also helps allow us to have younger players on the bench without having to rely on them as much as we do now with only four outfield substitutes."
