OS X 10.9.5

Mac OS X 10.9.5 was an update to Mac OS X 10.9 released on August 7, 2014. It had the following features:
 * Fixed an issue that prevented some Macs from automatically connecting to known Wi-Fi networks
 * Fixed issue causing the background or Apple logo to appear incorrectly on startup
 * Improved the reliability of waking from sleep
 * Included Safari 7.0.5

For detailed information about the security content of this update, seeApple security updates.