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.
84 days of security support left
1.45.6 latest release
79% 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 | 10mo ago |
| End-of-Life ends | 31 Dec 2026 | in 3mo |
| Latest release | 1.45.6 · 2 Oct 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 | 296 | +212 days |
| MediaWiki 1.45 | 31 Dec 2026 | 84 | this branch |
| MediaWiki 1.43 | 31 Dec 2027 | 449 | +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 — 84 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: 1.45.6, published 2 Oct 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?
84 days. Moving to MediaWiki 1.46 instead buys roughly 212 more days of security support.