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The Patriots added some depth to several thin areas with a series of roster moves.

According to Field Yates of ESPNBoston.com, the Pats activated defensive end Jermaine Cunningham Saturday, after he served a four-game suspension for violating the league’s performance-enhancing substance policy.

To make the roster spot for him, they waived defensive tackle Ron Brace, a former second-round pick who had a grand total of four tackles in 10 games this year.

They also promoted wide receiver Kamar Aiken and defensive back Malcolm Williams from the practice squad, addressing thin spots heading into tomorrow’s finale.