The Bengals activated DT Pat Sims from the physically-unable-to-perform list and waived LB Roddrick Muckelroy.
Last season, Sims played in 11 games with one start and made 20 tackles and one sack. In his four seasons with the Bengals, he has 121 tackles and five sacks in 52 games and 23 starts.
Sims began the season on the PUP list with a hamstring injury.
Muckelroy had one tackle in five games this season.