In the four League One matches played tonight, Chesterfield and Shrewsbury Town failed to gain any ground on Coventry City.
Chesterfield stay 22nd after a 1-0 defeat at Port Vale with Shrewsbury are still fourth bottom after a 2-1 defeat at Rochdale.
Millwall moved up to seventh with a 2-1 home win over Gillingham and MK Dons beat Swindon Town 3-2.