Download OS X Mavericks 10.9.5 Update (Combo)
The OS X Mavericks 10.9.5 update is recommended for all Mavericks users. It improves the stability, compatibility, and security of your Mac.
• 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 detailed information about the security content of this update, please visit: http://support.apple.com/kb/HT1222