Google Container-Optimized OS (COS) End of Life (EOL) Dates and End of Support (EOS) Dates

Latest Release: cos-129-19506-448-8 LTS (August 31, 2026)

13 Google Container-Optimized OS (COS) versions have reached End of Life (EOL) and End of Support (EOS), including Google Container-Optimized OS (COS) 117 (LTS) (EOL date: Sep 01, 2026) — no longer receiving security updates or patches. Google Container-Optimized OS (COS) 121 (LTS) reaches its End of Support date on Mar 01, 2027 — plan your upgrade path now. Google Container-Optimized OS (COS) cos-129-19506-448-8 LTS is the current supported release, with support through Mar 01, 2028 — 2 versions in active support. Also see Google Chrome end of support dates for related end-of-life information.

Google Container-Optimized OS (COS) end of life dates timeline — release schedule chart of the 8 most recent Google Container-Optimized OS (COS) versions, mapping security support windows against their EOL dates — Google Container-Optimized OS (COS) end of life dates and end of support (EOS) dates shown as a release schedule — support windows for the 8 most recent Google Container-Optimized OS (COS) releases of 16 total. Each bar runs from the release date to the end of security support, with the dashed line marking today. Exact Google Container-Optimized OS (COS) EOL, EOS and EOSL dates for every version are listed in the tables below.

Currently Supported Google Container-Optimized OS (COS) Releases - Active EOS/EOSL Support (2)

Release	Released	Support Status	Latest	LTS
129 (LTS)	May 21, 2026 (3 months ago)	Mar 01, 2028 (in 1 year and 5 months)	cos-129-19506-448-8 2026-08-31 (1 week and 4 days ago)	LTS
125 (LTS)	Oct 09, 2025 (11 months ago)	Sep 01, 2027 (in 11 months)	cos-125-19216-655-6 2026-08-31 (1 week and 4 days ago)	LTS

Google Container-Optimized OS (COS) Releases Nearing End of Life - Support Ending Soon (1)

Important: The following Google Container-Optimized OS (COS) releases will reach End of Life (EOL) within 6 months. Plan your migration to a supported release to ensure continued security updates and support.

Release	Released	Support Status	Latest	LTS
121 (LTS)	Apr 14, 2025 (1 year and 4 months ago)	Mar 01, 2027 (in 5 months)	cos-121-18867-584-3 2026-08-31 (1 week and 4 days ago)	LTS

Google Container-Optimized OS (COS) End of Life (EOL) Releases - No Longer Supported (13)

Release	Released	Support Status	Latest	LTS
117 (LTS)	Oct 02, 2024 (1 year and 11 months ago)	Sep 01, 2026 (1 week and 3 days ago)	cos-117-18613-731-2 2026-08-31 (1 week and 4 days ago)	LTS
113 (LTS)	Apr 15, 2024 (2 years and 4 months ago)	May 12, 2026 (3 months ago)	cos-113-18244-582-104 2026-05-12 (3 months ago)	LTS
109 (LTS)	Sep 27, 2023 (2 years and 11 months ago)	Sep 24, 2025 (11 months ago)	cos-109-17800-570-50 2025-09-24 (11 months ago)	LTS
105 (LTS)	Apr 03, 2023 (3 years and 5 months ago)	Apr 01, 2025 (1 year and 5 months ago)	cos-105-17412-535-98 2025-03-31 (1 year and 5 months ago)	LTS
101 (LTS)	Sep 15, 2022 (3 years and 11 months ago)	Oct 21, 2024 (1 year and 10 months ago)	cos-101-17162-528-64 2024-10-21 (1 year and 10 months ago)	LTS

97 (LTS)	Mar 29, 2022 (4 years and 5 months ago)	Mar 27, 2024 (2 years and 5 months ago)	cos-97-16919-450-41 2024-03-27 (2 years and 5 months ago)	LTS
93 (LTS)	Oct 18, 2021 (4 years and 10 months ago)	Oct 24, 2023 (2 years and 10 months ago)	cos-93-16623-461-42 2023-10-24 (2 years and 10 months ago)	LTS
89 (LTS)	Apr 07, 2021 (5 years and 5 months ago)	Mar 01, 2023 (3 years and 6 months ago)	cos-89-16108-798-22 2023-04-03 (3 years and 5 months ago)	LTS
85 (LTS)	Sep 24, 2020 (5 years and 11 months ago)	Sep 01, 2022 (4 years ago)	cos-85-13310-1498-13 2022-08-22 (4 years ago)	LTS
81 (LTS)	Mar 27, 2020 (6 years and 5 months ago)	Jan 10, 2022 (4 years and 8 months ago)	cos-81-12871-1317-8 2022-01-10 (4 years and 8 months ago)	LTS
77 (LTS)	Sep 27, 2019 (6 years and 11 months ago)	Apr 01, 2021 (5 years and 5 months ago)	cos-77-12371-1109-0 2021-01-11 (5 years and 8 months ago)	LTS
73 (LTS)	Mar 25, 2019 (7 years and 5 months ago)	Sep 05, 2020 (6 years ago)	cos-73-11647-656-0 2020-09-05 (6 years ago)	LTS
69 (LTS)	Sep 18, 2018 (7 years and 11 months ago)	Dec 01, 2019 (6 years and 9 months ago)	cos-69-10895-385-0 2019-10-08 (6 years and 11 months ago)	LTS

Google Container-Optimized OS (COS) End of Life & Support Summary

Which Google Container-Optimized OS (COS) Versions Are Currently Supported?

Google Container-Optimized OS (COS) currently has 2 supported releases. Google Container-Optimized OS (COS) cos-129-19506-448-8 LTS is the latest, with active support through Mar 01, 2028. Google Container-Optimized OS (COS) 125 (LTS) is also supported until Sep 01, 2027. Note that Google Container-Optimized OS (COS) 121 (LTS) support ends on Mar 01, 2027 — plan your upgrade before then. Also see Google Pixel Watch end of support for related end-of-life information.

Google Container-Optimized OS (COS) Versions Nearing End of Life

1 Google Container-Optimized OS (COS) release is reaching End of Life (EOL) within 6 months. Google Container-Optimized OS (COS) 121 (LTS) support ends on Mar 01, 2027. Upgrade to Google Container-Optimized OS (COS) cos-129-19506-448-8 LTS to stay on a supported release. Also see Google Kubernetes Engine EOSL information for related end-of-life information.

Google Container-Optimized OS (COS) End of Life (EOL) Version History

13 Google Container-Optimized OS (COS) releases have reached End of Life (EOL) and End of Support (EOS) — no longer receiving updates or patches. Google Container-Optimized OS (COS) 117 (LTS) reached EOL on Sep 01, 2026. Google Container-Optimized OS (COS) cos-129-19506-448-8 LTS is the recommended upgrade for users still on End of Life versions.