Colchester United have handed new contracts to defenders Brian Wilson, Matt Heath and Ben Coker.
Centre-half heath, 31, and 22-year-old left-back Coker have agreed 12-month extensions.
Right-back Wilson, 29, Colchester's only ever-present this season, has signed up for a further two years.
"He's a model professional and one for the young players to look up to, so we're really pleased," manager John Ward told
the club website.
The trio join veteran midfielder Karl Duguid, who has also agreed one-year terms, in committing to next season.
the loss of striker Kayode Odejayi to Rotherham,
Ward is also pessimistic on the
chances of keeping hold of winger Ashley Vincent.