diff --git a/pantheon.yml b/pantheon.yml
index d7844fa0c01ef88bb9af729d540a32fc6ed6d7d4..8279bdc87ac14433947471b7b5a9b0837348358b 100644
--- a/pantheon.yml
+++ b/pantheon.yml
@@ -1,5 +1,5 @@
 api_version: 1
 web_docroot: true
-php_version: 8.0
+php_version: 7.4
 database:
   version: 10.4