Qt end of life: end of support by version
The Qt Company · Development & DevOps
For Qt by The Qt Company, patchletter knows 12 support cycles. 11 of them have already ended and receive no more security updates. The next support window closes on 01/04/2027, 144 days from now. The current version of Qt is 6.12.0. The cycles come from the open endoflife.date project, last reconciled on 07/11/2026.
When does support end for which Qt 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 |
|---|---|---|---|
| 6.12LTS | 6.12.0 | 144 days left | EOL 1 Apr 27 |
| 6.11 | 6.11.3 | 39 days ago | End of Life |
| 6.10 | 6.10.3 | 215 days ago | End of Life |
| 6.9 | 6.9.3 | 397 days ago | End of Life |
| 6.8LTS | 6.8.3 | 585 days ago | End of Life |
| 6.7 | 6.7.3 | 762 days ago | End of Life |
| 6.6 | 6.6.3 | 950 days ago | End of Life |
| 6.5LTS | 6.5.8 | 1061 days ago | End of Life |
| 6.4 | 6.4.3 | 1318 days ago | End of Life |
| 6.3 | 6.3.2 | 1502 days ago | End of Life |
| 6.2LTS | 6.2.4 | 1672 days ago | End of Life |
| 6.1 | 6.1.3 | 1865 days ago | End of Life |
Which Qt versions no longer receive security updates?
11 of 12 cycles have ended. If you run one of those lines, the vendor ships you no more patches, not even for critical flaws.
- Qt 6.116.11.3
- Qt 6.106.10.3
- Qt 6.96.9.3
- Qt 6.86.8.3
- Qt 6.76.7.3
- Qt 6.66.6.3
- Qt 6.56.5.8
- Qt 6.46.4.3
- Qt 6.36.3.2
- Qt 6.26.2.4
- Qt 6.16.1.3
Where does the EOL data for Qt come from?
From the open endoflife.date project, which collects vendors' official support commitments. patchletter reconciles the cycles daily; the Qt data is as of 07/11/2026. In case of doubt the vendor's own lifecycle page applies. patchletter deliberately stores no vendor full texts.
New Qt versions by email
Tick the product and patchletter reports new releases by email. The update email costs nothing, and one click stops it again. The warning 90, 30 and 7 days before support ends is part of patchletter Pro.