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Google Container-Optimized OS (COS)End of Life (EOL) Dates & Support Status
Active
Operating SystemsLatest Version: cos-129-19506-448-36Latest Release: Sep 17, 2026
Container-Optimized OS (COS) is a Google-managed OS image optimized for running Docker containers on Google Cloud.
Support summary
Google Container-Optimized OS (COS) currently has supported cycles. Track the next EOL date and validate upgrades before your change window.
What do EOL and support statuses mean?Next EOL
Mar 1, 2027
Google Container-Optimized OS (COS) cos-121 · 155 days left
Supported cycles
3
16 lts
Versions
16
Latest Version
cos-129-19506-448-36
Active Support
3
EOL
13
Lifecycle Timeline
Oct 18, 2021As of Sep 27, 2026
cos-129Active · Jul 1, 2028
cos-125Active · Feb 1, 2028
cos-121Active · Mar 1, 2027
cos-117EOL · Sep 1, 2026
cos-113EOL · Mar 1, 2026
cos-109EOL · Sep 1, 2025
cos-105EOL · Mar 1, 2025
cos-101EOL · Oct 1, 2024
cos-97EOL · Apr 1, 2024
cos-93EOL · Oct 1, 2023
ActiveSecurityEOLHistorical phase unknown
Bars show history up to the snapshot date. Gray intervals lack dated support boundaries; arrows indicate an unannounced EOL date, not a support guarantee.
Versions
| Release | Release Date | Active Support | EOL | Latest Version | LTS | Status |
|---|---|---|---|---|---|---|
| cos-129 | May 21, 2026 | Maintained | Jul 1, 2028 | cos-129-19506-448-36 | Yes | Active |
| cos-125 | Oct 9, 2025 | Maintained | Feb 1, 2028 | cos-125-19216-655-28 | Yes | Active |
| cos-121 | Apr 14, 2025 | Maintained | Mar 1, 2027 | cos-121-18867-584-23 | Yes | Active |
| cos-117 | Oct 2, 2024 | Ended | Sep 1, 2026 | cos-117-18613-731-21 | Yes | EOL |
| cos-113 | Apr 15, 2024 | Ended | Mar 1, 2026 | cos-113-18244-582-104 | Yes | EOL |
| cos-109 | Sep 27, 2023 | Ended | Sep 1, 2025 | cos-109-17800-570-50 | Yes | EOL |
| cos-105 | Apr 3, 2023 | Ended | Mar 1, 2025 | cos-105-17412-535-98 | Yes | EOL |
| cos-101 | Sep 15, 2022 | Ended | Oct 1, 2024 | cos-101-17162-528-64 | Yes | EOL |
| cos-97 | Mar 29, 2022 | Ended | Apr 1, 2024 | cos-97-16919-450-41 | Yes | EOL |
| cos-93 | Oct 18, 2021 | Ended | Oct 1, 2023 | cos-93-16623-461-42 | Yes | EOL |
| cos-89 | Apr 7, 2021 | Ended | Mar 1, 2023 | cos-89-16108-798-22 | Yes | EOL |
| cos-85 | Sep 24, 2020 | Ended | Sep 1, 2022 | cos-85-13310-1498-13 | Yes | EOL |
| cos-81 | Mar 27, 2020 | Ended | Jan 10, 2022 | cos-81-12871-1317-8 | Yes | EOL |
| cos-77 | Sep 27, 2019 | Ended | Apr 1, 2021 | cos-77-12371-1109-0 | Yes | EOL |
| cos-73 | Mar 25, 2019 | Ended | Jun 1, 2020 | cos-73-11647-656-0 | Yes | EOL |
| cos-69 | Sep 18, 2018 | Ended | Dec 1, 2019 | cos-69-10895-385-0 | Yes | EOL |
Data sources
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Show Google Container-Optimized OS (COS)'s live support status in your README, docs, or dashboard. The badge is a static SVG served from eol.wiki and follows the lifecycle data above.
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<a href="https://eol.wiki/cos/"><img src="https://eol.wiki/badge/cos.svg" alt="Google Container-Optimized OS (COS) end-of-life status" height="20"></a>Frequently Asked Questions
Which versions of Google Container-Optimized OS (COS) have reached end of life?
The following Google Container-Optimized OS (COS) versions have reached end of life and no longer receive security updates: cos-117, cos-113, cos-109, cos-105, cos-101, cos-97, cos-93, cos-89 (and 5 more). It is recommended to upgrade to a supported version.
Is it safe to continue using Google Container-Optimized OS (COS) cos-117?
Google Container-Optimized OS (COS) cos-117 has reached end of life and no longer receives security patches or bug fixes. Continuing to use it may expose your systems to known vulnerabilities. We strongly recommend upgrading to a supported version.
What is the latest version of Google Container-Optimized OS (COS)?
The latest version of Google Container-Optimized OS (COS) is cos-129-19506-448-36, released in the cos-129 release cycle.
How many versions of Google Container-Optimized OS (COS) are currently supported?
Google Container-Optimized OS (COS) currently has 3 actively supported version(s): cos-129, cos-125, cos-121.
When does Google Container-Optimized OS (COS) cos-129 reach end of life?
Google Container-Optimized OS (COS) cos-129 is scheduled to reach end of life on Jul 1, 2028.
What should I do when Google Container-Optimized OS (COS) reaches end of life?
When a Google Container-Optimized OS (COS) version reaches end of life, you should: 1) Plan your migration to a supported version as soon as possible. 2) Review the release notes for breaking changes. 3) Test your applications thoroughly in a staging environment. 4) Update your dependencies to ensure compatibility with the new version.