But those additions haven't bolstered their Super Bowl odds, according to Bovada.
The Las Vegas bookmaker has the Cowboys at 12-to-1 odds to win Super Bowl 52. Dallas was 9-to-1 favorites after the season, and 10-to-1 on March 16.
In fairness, the 12/1 odds are the second-best of any team in the league. The New England Patriots are the favorites to win the Super Bowl at 7-to-2.
Other teams pegged at 12/1 include the Atlanta Falcons, Green Bay Packers, Oakland Raiders and Seattle Seahawks.
The Houston Texans are 16/1 favorites to win it all. As far as other NFC East teams, the New York Giants have the next-best odds at 20/1. The Philadelphia Eagles and Washington Redskins are each 50/1.