Container-Optimized OS end of life: end of support by version
Google · Operating Systems
For Container-Optimized OS by Google, patchletter knows 12 support cycles. 8 of them have already ended and receive no more security updates. The next support window closes on 01/03/2027, that is in 142 days. The current version of Container-Optimized OS is cos-133-19999-44-106. The cycles come from the open endoflife.date project, last reconciled on 30/09/2026.
When does support end for which Container-Optimized OS version?
A cycle is a maintained version line. Where a date is given, support ends on that day — after it the vendor ships no more security updates for that line.
| Cycle | Latest version | End of support | Status |
|---|---|---|---|
| cos-133LTS | cos-133-19999-44-106 | 753 days left | EOL 1 Nov 28 |
| cos-129LTS | cos-129-19506-505-25 | 630 days left | EOL 1 Jul 28 |
| cos-125LTS | cos-125-19216-700-23 | 479 days left | EOL 1 Feb 28 |
| cos-121LTS | cos-121-18867-624-8 | 142 days left | EOL 1 Mar 27 |
| cos-117LTS | cos-117-18613-767-2 | 39 days ago | End of Life |
| cos-113LTS | cos-113-18244-582-104 | 223 days ago | End of Life |
| cos-109LTS | cos-109-17800-570-50 | 404 days ago | End of Life |
| cos-105LTS | cos-105-17412-535-98 | 588 days ago | End of Life |
| cos-101LTS | cos-101-17162-528-64 | 739 days ago | End of Life |
| cos-97LTS | cos-97-16919-450-41 | 922 days ago | End of Life |
| cos-93LTS | cos-93-16623-461-42 | 1105 days ago | End of Life |
| cos-89LTS | cos-89-16108-798-22 | 1319 days ago | End of Life |
Which Container-Optimized OS versions no longer receive security updates?
8 of 12 cycles have ended. If you run one of those lines, the vendor ships you no more patches — not even for critical flaws.
- Container-Optimized OS cos-117cos-117-18613-767-2
- Container-Optimized OS cos-113cos-113-18244-582-104
- Container-Optimized OS cos-109cos-109-17800-570-50
- Container-Optimized OS cos-105cos-105-17412-535-98
- Container-Optimized OS cos-101cos-101-17162-528-64
- Container-Optimized OS cos-97cos-97-16919-450-41
- Container-Optimized OS cos-93cos-93-16623-461-42
- Container-Optimized OS cos-89cos-89-16108-798-22
Where does the EOL data for Container-Optimized OS come from?
From the open endoflife.date project, which collects vendors' official support commitments. patchletter reconciles the cycles daily; the Container-Optimized OS data is as of 30/09/2026. In case of doubt the vendor's own lifecycle page applies — patchletter deliberately stores no vendor full texts.
New Container-Optimized OS versions by email
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