OS X 10.11.3

Mac OS X 10.11.3 was an update to Mac OS X 10.11 released on January 19, 2016.

This update includes the following: Enterprise content: For detailed information about the security content of this update, see Apple Security Updates.
 * Fixes an issue that may prevent some Mac computers from waking from sleep when connected to certain 4K displays.
 * Third-party .pkg file receipts stored in /var/db/receipts are now retained when upgrading from OS X Yosemite.