Scandrick signed a six-year, $28.2 million deal in 2011 with $10 million guaranteed. The extension runs through 2018.
The Cowboys guaranteed Scandrick's salary for the next three seasons.
Scandrick is tied for the team lead this season with 14 pass breakups and is third with two interceptions. Scandrick has taken over a starting spot from Morris Claiborne and has been one of the more productive defensive backs on the team.