United Kingdom, Feb. 8 -- Jason Isbell has filed for divorce from Amanda Shires.

The 45-year-old singer submitted paperwork to officially end his marriage to his fellow country artist on 15 December, two months before they would have celebrated their 11th wedding anniversary, People magazine reports.

The couple - who have daughter Mercy, eight, together - have been open about their marriage struggles in the past, with the tensions between them highlighted in 2023 documentary 'Running With Our Eyes Closed', which featured a scene in which Amanda read an email she'd sent her husband about potentially seeking marriage counselling.

And Amanda - who plays fiddle and provides backing vocals for Jason's band the 400 Unit, while he plays guita...