Teams will have the option to continue using up to five substitutes until the end of 2022, the International Football Association Board (IFAB) confirmed on Friday.
The temporary rule was first introduced in May 2020 because of the impact of the Covid-19 pandemic to allow teams to use five substitutes, instead of the standard three.
IFAB said the rule will remain in place until the end of 2022, for all top-level competitions.
An IFAB statement read:
"The decision follows a global analysis of the ongoing impact of COVID-19 on football, as well as representations from several key stakeholders from across the football community.
"Introduced in May 2020, the temporary amendment is aimed at supporting player welfare, in particular where schedules have been disrupted, often leading to competitions being played in a condensed period.
"The IFAB will continue to review the impact of the pandemic on football and consult with its stakeholders on this important welfare matter."