Google Container-Optimized OS (COS)
OSGoogle Container-Optimized OS (COS) cos-129 is the newest actively maintained release, currently at patch cos-129-19506-299-36. 4 of 16 tracked cycles remain supported. The next cycle scheduled to reach end-of-life is cos-117, on September 1, 2026.
Release lifecycle
Actively maintainedSecurity support onlyEnd of life
Today
cos-129Latest
cos-129-19506-299-36 · Jul 20, 2026
cos-125
cos-125-19216-532-25 · Jul 20, 2026
cos-121
cos-121-18867-528-21 · Jul 20, 2026
cos-117
cos-117-18613-675-20 · Jul 20, 2026
cos-113
EOL May 12, 2026
cos-109
EOL Sep 24, 2025
cos-105
EOL Apr 1, 2025
cos-101
EOL Oct 21, 2024
cos-97
EOL Mar 27, 2024
cos-93
EOL Oct 24, 2023
cos-89
EOL Mar 1, 2023
cos-85
EOL Sep 1, 2022
cos-81
EOL Jan 10, 2022
cos-77
EOL Apr 1, 2021
cos-73
EOL Sep 5, 2020
cos-69
EOL Dec 1, 2019
20192020202120222023202420252026
Data sourced from endoflife.date.
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