UPDATE: John Gibson's divorce was finalized Jan. 2, 2013. According to court documents obtained by E! News, $640,000 in various assets went to his ex-wife.
Mel Gibson's stepmother has been served.
Well, they beat the seven-year itch, so why did the elder Gibson decide at 93 years of age to be single again?
Irreconcilable differences put a wedge in things, according to the petition filed Friday in Los Angeles Superior Court.
Gibson lists their date of separation as May 28 and asks both that the court terminate its jurisdiction to award spousal support to his soon-to-be ex-wife and that she be responsible for all attorney fees.
Mel's mother, Anne, died in 1990. The Braveheart star was the sixth of his parents' 11 children.