The latest version of WordPress, 6.9, is available on Pantheon as of December 02, 2025.
Upgrade to WordPress 6.9 right from your Pantheon dashboard or Terminus to access the latest features, fixes, and security enhancements. See related documentation for how to apply core updates.
For full details about WordPress 6.9, see the release notes
The Pantheon Content Publisher plugin is now officially available in the WordPress Plugin Repository. You can now install or update it directly from your WordPress dashboard.
We recommend that all customers switch their sites to the WordPress.org–hosted version to take advantage of seamless updates and improved long-term support. By switching, you’ll:
Switching to the repository version helps ensure your site runs the most stable and officially supported release of the plugin.
For sites using Object Cache Pro, a new recommended config constant, Pantheon OCP Config Version 2.0, is now available.
The primary change is setting the analytics persist setting to false to reduce Redis errors experienced by sites. This will now clear object caching analytics when the cache is flushed.
View the new config constant here.
You may choose to manually replace the WP_REDIS_CONFIG constant in your wp-config-ocp.php or re-run terminus install:run <site>.<environment> ocp to apply the changes.
The latest version of WordPress, 6.8.3, is available on Pantheon as of September 30, 2025.
Upgrade to WordPress 6.8.3 right from your Pantheon dashboard or Terminus to access the latest features, fixes, and security enhancements. See related documentation for how to apply core updates.
For full details about WordPress 6.8.3, see the official release announcement.
Pantheon has released a new version of our Native PHP Sessions plugin. This release updates documentation and a number of minor dependencies under the hood. Most notably, this update tests the plugin against PHP 8.4, increases the minimum PHP version to 7.4 and bumps the minimum supported WordPress version to 5.3. Additionally, to comply with WordPress plugin repository guidelines, we have removed "WordPress" from the plugin name.
You are encouraged to upgrade your version of Native PHP Sessions to the latest version as soon as you are able.
If you have issues with the plugin, please use the GitHub issue queue for the plugin.
PHP Runtime Generation 2 will not include wkhtmltopdf.
Pantheon has included wkhtmltopdf with our PHP Runtime since 2012 as a tool for generating PDFs on-demand. This is commonly used by sites that have the print and entity_print Drupal modules configured.
However, wkhtmltopdf has not been updated by its maintainers for 5 years and is considered abandoned. As a result, we are not including wkhtmltopdf with PHP Runtime Generation 2.
Sites that are using wkhtmltopdf should switch to dompdf. Dompdf is a PHP-based rendering engine that can be placed inside a site's codebase. Please refer to the External Libraries documentation for information on how to make this switch.
PHP Runtime Generation 2 will begin rolling out September 24. If you need more time to switch to dompdf, we recommend opting out for now.
All WordPress plugins and Drupal modules actively maintained by Pantheon have been confirmed to be compatible with PHP 8.4. Most did not require any code updates to be compatible, so they did not receive a version bump.
PHP 8.4 is now available on the Pantheon platform. Learn more about the release.
We have released version 3.0.0 of the Pantheon WP Coding Standards. This is a major release over the previous 2.x versions which adds new sniffs for use of the PHP rename() function, which is not supported on Pantheon, and commenting. Upgrading to this version may cause some existing code to fail the new sniffs, so we recommend reviewing the release notes.
The Pantheon WP Coding Standards are a set of custom rules for PHP_CodeSniffer that help developers write maintainable code that is compatible with Pantheon’s platform. They are not used by default in Pantheon’s WordPress sites, but can be installed and configured to run in your local development environment or CI/CD pipelines and are actively used by the WordPress plugins that Pantheon maintains.
For a full list of changes in this release, please refer to the 3.0.0 release notes. Learn more about our Pantheon WP Coding Standard in our video on YouTube.