Maintain Releases Cocktail 9.0.3 (El Capitan Edition) Posted 10/25/2015 at 2:00 UTC in Mac by gnye@amdesign.net | Permalink | Tweet Maintain today announces Cocktail 9.0.3 (El Capitan Edition), the latest maintenance update for users running OS X El Capitan 10.11. Cocktail is a general purpose utility for OS X that lets users clean, repair and optimize their Macs. This version adds compatibility with OS X 10.11.1 and the latest versions of supported web browsers. It also addresses an issue in which Cocktail may fail to retrieve update information and contains other bug fixes.