MediaWiki 1.45 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
MediaWiki 1.45 is actively supported. It reaches end of life on 31 Dec 2026.
144 days of security support left
1.45.4 latest release
63% of this branch's supported lifetime has elapsed — 4 Dec 2025 → 31 Dec 2026.
Check your versionhttps://your-server-url/mediawiki/Special:Version
Support timeline
Official dates from the MediaWiki release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 4 Dec 2025 | — |
| End of life (scheduled) | 31 Dec 2026 | in 144 days |
| Latest release | 1.45.4 · 29 Jun 2026 | current |
How much runway a newer branch buys
Moving to MediaWiki 1.46 extends security support by about 212 days.
| Branch | End of life | Days left | vs 1.45 |
|---|---|---|---|
| MediaWiki 1.46 | 31 Jul 2027 | 356 | +212 days |
| MediaWiki 1.45 | 31 Dec 2026 | 144 | this branch |
| MediaWiki 1.43 | 31 Dec 2027 | 509 | +365 days |
Frequently asked questions
When does MediaWiki 1.45 reach end of life?
MediaWiki 1.45 reaches end of life on 31 Dec 2026 — 144 days from now. After that date it receives no security fixes.
Is MediaWiki 1.45 still supported?
Yes. MediaWiki 1.45 is currently maintained. Latest release: 1.45.4, published 29 Jun 2026.
What happens when MediaWiki 1.45 reaches end of life?
Security fixes stop. After 31 Dec 2026 this branch receives no further updates under standard support.
How long do I have to upgrade from MediaWiki 1.45?
144 days. Moving to MediaWiki 1.46 instead buys roughly 212 more days of security support.