Luton Town defenders Fred Murray and Ed Asafu-Adjaye have signed new contracts, the lengths of which are undisclosed.
Murray, 29, played 30 times for the Hatters last season while 22-year-old Asafu-Adjaye has made 63 appearances since breaking into the side in 2008.
"I made it no secret that I wanted Freddie and Ed to stay with us and I'm happy they have decided to do so," boss Gary Brabin told the club website.
"They are quality defenders who will play an important role next season."
Murray, who started his career at Blackburn, has featured for Cambridge United, Northampton Town, Stafford, Stevenage and Exeter throughout his career, joining the Hatters in August 2009.
Asafu-Adjaye is a Kenilworth Road youth product, who played five times during a loan spell at Histon last term, but appeared in all three of Luton's play-off matches.
Meanwhile Grimsby chairman John Fenty has ruled out the prospect of top-scorer Alan Connell joining the Hatters.
Luton had tabled an offer for the 28-year-old but Fenty told the Grimsby Telegraph: "We had a derisory offer from Luton and we rejected that, telling them it is inconceivable we would allow Alan to join one of our rivals in the division.
"I can state categorically that Alan Connell will not be playing for Luton Town next season."