type = "admin-doc"
+++
-While we try to ensure a fairly slow, steady and stable path for BookStack updates, requirements do change
+While we try to ensure a fairly steady & stable path for BookStack updates, requirements do change
as software develops & moves on. In particular, the minimum required version of PHP will increase
about once per year. Every so often we also may require a new minimum version of composer to be used
for BookStack. This page details the common steps required to update these both.
## Updating PHP
-Currently the minimum version of PHP required by BookStack is PHP 8.1. You'll need to update PHP if using a version lower than 8.1.
+Currently the minimum version of PHP required by BookStack is PHP 8.2. You'll need to update PHP if using a version lower than 8.2.
You can usually check your installed PHP version by running `php -v` but in some cases your web-server could be running a different PHP version than what the command line reflects.
<details>
<summary>Updating to PHP 8.3 on most Debian & Ubuntu based systems using Apache</summary>
-The commands below provide an example of how PHP can be updated to the latest version (8.3) on most Debian & Ubuntu based systems
+The commands below provide an example of how PHP can be updated to the PHP 8.3 on most Debian & Ubuntu based systems
that are running PHP via Apache using mod-php.
**Warnings:**