The Club have triggered options on the contracts of Bailey Wright, Will Hayhurst and Jeffrey Monakana.
All three had contracts that would have run out on June 30th 2013, but had options to extend those deals for a further 12 months, which have now been activated and run until 30th June 2014.
Speaking about the extensions, manager Simon Grayson said: “I am delighted we have extended the contracts of Bailey, Will and Jeffrey and I am sure they are delighted as well.
“They have all contributed to the football club over the season. Bailey has been outstanding since we arrived; he and Paul Huntington have formed a really strong relationship and contributed to very few goals conceded.
“Will has been a revelation with his performances and the goals he has scored from the wide areas and Jeffrey has affected the games over the last few weeks. They are all young, hungry players, looking to improve and we will give them that guidance and work with them to make them good players.”