Push to increase Vic wife-killer sentence

Prosecutors will make a bid to increase the jail term of self-confessed Melbourne wife killer Borce Ristevski.

Director of Public Prosecutions Kerri Judd QC lodged an appeal against the nine-year maximum prison sentence on Monday.

She argues the sentence and its six-year minimum are "manifestly inadequate".

In April, 55-year-old Ristevski was jailed after admitting the manslaughter of his wife Karen and with time already served he could walk from jail on parole by December 2023.

Ms Ristevski's body was found covered in branches at Macedon Regional Park eight months after the 47-year-old went missing in June 2016.

Ristevski killed her at their Avondale Heights home before bundling her body into her Mercedes-Benz, lying to his wife's family and playing a mournful pallbearer at her funeral.

He was initially due to stand trial for murder but a court deemed there was insufficient evidence to secure a conviction, at which point he pleaded guilty to the lesser charge of manslaughter.

An autopsy could not determine the cause of Karen's death and Ristevski has never explained how his wife of 27 years died.

A date for the appeal is yet to be set.