Hereford have extended Adam Bartlett and Ryan Valentine's contracts by a further year.
Ryan Valentine's second-half penalty sealed a 1-0 victory for Hereford over Chesterfield at Edgar Street.
Hereford ended a run of 16 league games without a win as they beat Accrington 2-0 at Edgar Street.
Hereford United have signed Ryan Valentine on a one-year contract from Darlington.
Wrexham have signed defender Carl Tremarco for an undisclosed fee from Tranmere.
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