Manual:Upgrading

Here are the instructions for upgrading to the more recent versions:


 * Manual:Upgrading to 1.9 — the current stable version
 * Manual:Upgrading to 1.8 — why? we recommended you use version 1.9
 * Manual:Upgrading to 1.7 — why? we recommended you use version 1.9
 * Manual:Upgrading to 1.6 — the last version compatible with PHP 4

For instructions on versions prior to 1.6, along with some general tips & tricks for upgrading, see the following page on meta:

See also:
 * Version lifecycle
 * Manual:Upgrading MediaWiki (canonical redirect, always points to the latest version)
 * In Special:Version you can see the MediaWiki version installed in a wiki website.
 * This page shows the last MediaWiki version number.