diff --git a/defaults/install/pantheon.yml b/defaults/install/pantheon.yml
index 7de57ff2..0f2a736c 100644
--- a/defaults/install/pantheon.yml
+++ b/defaults/install/pantheon.yml
@@ -4,5 +4,5 @@
 api_version: 1
 web_docroot: true
 php_version: 8.1
-drush_version: 11
+drush_version: 10
 build_step: false