diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index a8bedd5632a9..6b199ec6c65f 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -22,7 +22,7 @@ use Drupal\Core\Language\LanguageInterface;
 /**
  * Minimum supported version of PHP.
  */
-const DRUPAL_MINIMUM_PHP = '5.4.5';
+const DRUPAL_MINIMUM_PHP = '5.4.2';
 
 /**
  * Minimum recommended value of PHP memory_limit.