Apple has released an update to OS X Mavericks, versioned as OS X 10.9.5. The update is recommended for all Mac/Hack users to install and includes bug fixes and security updates for core system software.
• Improves the reliability of VPN connections that use USB smart cards for authentication
• Improves the reliability of accessing files located on an SMB server
• Includes Safari 7.0.6
For you update your Hack/Mac go in Apple menu and choosing “Software Update”.
Or, download the updates in AppleSupport site, see this links: