Hereford United duo Adam Bartlett, 24, and Ryan Valentine, 27, have extended their contracts for a further year.
Goalkeeper and captain Bartlett has started all but one of United's games this season, while defender Valentine has made 35 league appearances.
Midfielder Kenny Lunt, 30, also has the option of extending his deal.
United have also extended by another month the loan of Birmingham City defender Dan Preston, 18. Preston has made four appearances for the Bulls.
Meanwhile, Bulls boss Graham Turner says his side will not be letting up in the relegation fight, despite opening up a gap over the bottom teams.
Hereford's win at Chesterfield puts them 13 points above the League Two relegation zone.
But the Bulls manager told BBC Hereford and Worcester that there is still a lot to play for.
"The sooner we get safe the easier it will be and that was the priority when I took over."
Turner added: "We have three very big games coming up against Darlington, Barnet and Grimsby.
"We have lifted ourselves up against one of the better teams (Chesterfield), now we have to do it against sides around us and beneath us."
Turner says it is also an important time for those players who are looking for contracts for next season.
"They have got to be making sure they look after themselves whether it's here or somewhere else.
"So there is still a lot for them to play for.
"The aim is still to finish in the top half of the table.
"It has been a traumatic season in a variety of areas but lets hope we can finish the season strongly and then look forward to the future."
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