May 12, 2026
Pantheon Search with Apache Solr 9.10.0 support for Drupal 7 is available as a beta release for testing on Multidev environments. Do not deploy Solr 9 changes to Dev, Test, or Live. At GA, the updated module will be available as a one-click upstream update.
This extends the Solr 9 beta support previously announced for Drupal 10 and 11.
For setup instructions, required module versions, upgrading from Solr 3, and custom config details, see Using Solr on Drupal 7.
What about Solr 3?
Solr 3 remains supported for Drupal 7 sites during the Beta period. Solr 3 will be removed on February 9, 2027. Sites using Solr 3 should plan to upgrade to Solr 9.
Solr 3 is no longer supported for Drupal 9.4+ as of December 9, 2025. Those sites must use Solr 8 or above.