Download OS X El Capitan 10.11.5 Combo Update
OS X El Capitan 10.11.5 Update
The OS X El Capitan 10.11.5 update improves the stability, compatibility and security of your Mac, and is recommended for all El Capitan users.
For more detailed information about this update, please visit: https://support.apple.com/kb/HT206230
For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222