Download macOS Catalina 10.15.5 Supplemental Update
macOS Catalina 10.15.5 supplemental update provides important security updates and is recommended for all users.
Some features may not be available for all regions, or on all Apple devices. For more detailed information about this update, please visit: https://support.apple.com/kb/HT210642
For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT20122