Richarlison, 21, replaced Fluminense striker Pedro, who dropped out the squad after injuring his knee in Saturday's 2-1 loss at Cruzeiro.
The former Watford player scored three times in his first two Premier League starts for Everton but was sent off in last weekend's 2-2 draw with Bournemouth.
In their first matches since being knocked out the World Cup at the quarter-final stage in July, Brazil play the U.S. in New Jersey on Sept. 7 before travelling to Maryland to face El Salvador four days later.
(Reporting by Andrew Downie, editing by Ed Osmond)
