20-year-old Westwood has signed a new improved deal that will keep him at Gresty Road until 2014.
Westwood has come through the academy ranks and has now made 61 league and cup appearances since making his debut back in March 2009 where he came on as a sub in the 1-0 home defeat to Millwall.
He signed his first professional contract in 2008 and since then the Crewe born midfielder has had four contract extensions since then with the previous being in July.