The Colts announced that they have promoted cornerback Frankie Williams to active roster and signed linebacker Chris Carter. To make room, linebacker Trevor Bates and tackle Jeremy Vujnovich have been let go. 
Williams, a Purdue product, went undrafted this year and signed on with the Colts in May. It initially looked like he was going to make the roster, but he was dropped in early September for veteran Darryl Morris. Williams joined Indianapolis’ practice squad soon after and his persistence has finally garnered him a place on the 53-man roster. With Darius Butler and Patrick Robinson banged up, Williams will offer depth during the Colts’ Sunday night contest against the Texans.
Carter, meanwhile, was a fifth-round pick of the Steelers in the 2011 draft. He has just four NFL starts to his credit, but he could be used in a pass rush role off the bench.