The money will help pay for most of the rest of the $143 million renovation of Lambeau not covered by the team's stock sale which raised $67 million.
The NFL approved the money under a league program that helps teams pay for new stadiums, as well as updating old ones.
Packers officials say it will reduce the amount of money the team will have to borrow.
Lambeau Field's 2003 renovation -- largely paid by a new sales tax -- also benefited from a similar program.
The new renovation includes adding 6,700 more seats, a new sound system and video boards.