diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index 777adf3d33..bd7d49ef8b 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -25,7 +25,7 @@
 /**
  * Minimum recommended version of PHP.
  */
-const DRUPAL_RECOMMENDED_PHP = '7.4.0';
+const DRUPAL_RECOMMENDED_PHP = '7.1.0';
 
 /**
  * Minimum recommended value of PHP memory_limit.