: Open the App Store and check the Purchases tab. If you have ever downloaded Mavericks, it will be listed there for free re-download. Third-Party & Alternative Archives
: If you already have an earlier version of Mavericks (10.9.0–10.9.4), you can download the OS X Mavericks 10.9.5 Update (Combo) directly from Apple Support .
: Provides the 10.9.5 13F34 build . Note: You may need to set your Mac's system clock back to February 1, 2014 , to bypass expired security certificates during installation. System Requirements
Before downloading, ensure your Mac is compatible with 10.9.5: Download OS X Mavericks 10.9.5 Update (Combo)