Convicted child killer Jeremy McLaughlin is appealing against his conviction and sentence for the murder of Christchurch schoolgirl Jade Bayliss.
Last month McLaughlin was sentenced in the High Court at Christchurch to life imprisonment with a minimum non-parole period of 23 years.
Today, the Court of Appeal confirmed he had filed appeal papers. No date had been set for the hearing.
McLaughlin has always denied murdering 13-year-old Jade - his ex-partner's daughter - on November 10, 2011.
In April, a jury of seven women and five men found him guilty of murder.