The Olympic Park facility was due to be upgraded and would have been unavailable to host the grand final before the pandemic struck.
The NSW government dumped the $800 million redevelopment to redirect funds towards job creation.
Tickets for the NRL grand final go on sale on Wednesday.
“This year will be a historic grand final day,” said NRL chief executive Andrew Abdo.
“The teams competing would have overcome all challenges in front of them and we will experience the culmination of a season like no other.
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“We are working on innovative ways to showcase the pre-game entertainment and returning to ANZ Stadium will provide us with the space to put on the most entertaining show possible.