PHP 7.2, 7.3, and 8.0 have reached End of Sale on the Pantheon platform. New sites can no longer be created using these PHP versions.
This was previously announced in the PHP version removal schedule published March 11, 2026.
These versions, along with PHP 5.6, 7.0, and 7.1, are scheduled for removal on September 30, 2026. Sites still running a removed PHP version will be automatically upgraded to the oldest available PHP version at the time of removal.
Action required
If your site is running PHP 7.2, 7.3, or 8.0, upgrade to a recommended PHP version before September 30, 2026 to avoid disruption. Pantheon recommends PHP 8.3 or 8.4 for all production sites.
For guidance on upgrading, refer to Upgrade PHP Versions.
Sites created with custom upstreams that specify an end-of-sale PHP version may also experience unexpected behavior upon site creation.