Long-serving midfielder Karl Duguid has signed a new one-year contract with Colchester.
Duguid, whose current terms were due to expire in June, recently made his 400th league appearance for the Essex club.
The 34-year-old returned to the U's on a one-year deal last summer, coming three years after leaving to join Plymouth.
Manager John Ward told the club's official website: "I think it's excellent news. We've tried to make inroads into the contracts and Karl was one of the players we'd made an offer to.
"He was quick to come back to us and we're delighted that he's staying."