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Pantheon release notes

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Tools & APIs
December 11, 2025

Log forwarding for Splunk and Sumo Logic is now availble via a Private Beta program. There is no additional cost for this feature and anyone can request an invite by submitting this form.

For more information, see this related blog post.

When enabled, this feature streams the following log types from your Pantheon site to your external service (Splunk or Sumo Logic):

  • php-fpm-error
  • php-slow
  • php-error
  • nginx-access
  • nginx-error

Share feedback: Once Beta access has been granted, users will recieve a welcome email and be invited to a dedicated slack channel where you can provide feedback, ask questions and discuss usage with the Pantheon product and engineering team.

To request an invite, submit this form.

Documentation

See also, the following new docs:

November 6, 2025

Terminus 4.1.1 is now available. This patch update contains the latest bug fixes and improvements for this tool.

This release includes enhanced database cloning capabilities and improved environment information accuracy.

Added

  • Auto-detect URLs for database clone search-replace operations, reducing the need for manual URL configuration when cloning databases between environments

Fixed

  • Fixed the drush_version field output in the env:info command to display accurate Drush version information

How to upgrade Terminus

If you manage your installation via Homebrew on macOS, you can update Terminus with the following command:

For other systems, see additional upgrade instructions here.

October 7, 2025

Terminus 4.1.0 is now available. This minor update contains the latest bug fixes and improvements for this tool.

This release includes enhanced environment information visibility and improved error messaging.

Added

  • PHP Runtime Generation and PHP Version fields are now optional fields of the env:list command output, providing better visibility into your environment's PHP configuration
    • Use env:list <site> --fields=id,php_runtime_generation,php_version to view these fields

Fixed

  • Improved workflow timeout handling now displays warnings instead of confusing error messages when workflows take longer than expected

How to upgrade Terminus

If you manage your installation via Homebrew on macOS, you can update Terminus with the following command:

For other systems, see additional upgrade instructions here.

September 12, 2025

Terminus 4.0.3 is now available. This small update contains the latest bug fixes and improvements for this tool.

Added

  • Make site label available in site:list and org:site:list commands
  • Add a debug log message to workflow:wait printing the workflow start time

Fixed

  • Regression affecting SSH commands (e.g., drush, wp-cli) on sites using external version control
  • Un-deprecated --tags parameter on org:site:list command
  • Remove unnecessary api call from tag:add and tag:list causing unnecessary load and timeouts

How to upgrade Terminus

If you manage your installation via Homebrew on macOS, you can update Terminus with the following command:

For other systems, see additional upgrade instructions here.

September 6, 2025

Terminus 4.0.2 is now available. This small update contains the latest bug fixes and improvements for this tool.

Notable release details

For more information about this release, visit the GitHub release page.

Warning:
Known Regression

We've identified a regression affecting SSH commands (e.g., drush, wp-cli) on sites using external version control which will be patched next week.

How to upgrade Terminus

If you manage your installation via Homebrew on macOS, you can update Terminus with the following command:

For other systems, see additional upgrade instructions here.

July 18, 2025

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.

July 15, 2025

We have released version 0.7.0 of the 'Push to Pantheon' GitHub Action. This version adds a new input to skip the Terminus install if your workflow is already installing Terminus. Documentation in the readme.md has been updated to include definitions for both the skip_terminus_install and relative_site_root (which was previously undocumented) inputs. Additionally, documentation guidance has been added for using the action with robots (like Dependabot) to ensure robot-created workflows don't fail due to lack of permissions.

For more details and a full list of changes in this release, please refer to the 0.7.0 release notes. To update to the latest version, modify your workflow file to use 0.7.0:

June 25, 2025

We have released version 0.6.1 of the 'Push to Pantheon' GitHub Action. This version updates the version of the Terminus GitHub Action dependency, updates documentation in the README, and updates the default git user and email for build asset commits to match existing standards (Pantheon Automation). This is also the first version available in the GitHub Action Marketplace.

Push to Pantheon Action commit

For more details, please refer to the 0.6.1 release notes. To update to the latest version, modify your workflow file to use 0.6.1: