Defender Jack Smith has signed a one-year contract extension after helping Swindon earn promotion.
Smith was a regular in Swindon's promotion-winning side
The 23-year-old played in 41 of Town's 46 league games as they finished in third place in League Two, also scoring three times from the penalty spot.
Smith was signed for the Robins from Watford in 2005 by former boss Andy King, one of four managers he has played under in two seasons.
He has now made a total of 79 league appearances for Swindon.