An NFL Players Association official familiar with the league's salary-cap negotiations tells The Associated Press the figure for the 2013 season will rise to $123 million from $120.6 million in 2012.
The official spoke to the AP on condition of anonymity Thursday because no formal announcement had been made.
The increase is a result of greater-than-expected revenues last season -- primarily from NFL Properties -- and a jump in projected league revenues, according to the official.
The league and the union work together to establish a cap number, based on parameters established under their collective bargaining agreement. The current 10-year CBA was signed in August 2011, ending the owners' lockout of the players.