Credit: Ron Galella/WireImage

Mel Gibson is officially a single man.

The 55-year-old actor finalized his divorce from Robyn Gibson (now going by Robyn Moore) on Friday, TMZ reports.

Robyn, 55, filed for divorce in 2009 following a three-year separation -- shortly after learning Mel's then girlfriend Oksana Grigorieva was pregnant.

Mel and Robyn were married for nearly 30 years and have seven children together.