diff --git a/include/constants.php b/include/constants.php
index b041191b5..a202cc7dd 100644
--- a/include/constants.php
+++ b/include/constants.php
@@ -31,7 +31,7 @@ defined('PWG_COMBINED_DIR') or define('PWG_COMBINED_DIR', $conf['data_location']
 defined('PWG_DERIVATIVE_DIR') or define('PWG_DERIVATIVE_DIR', $conf['data_location'].'i/');
 
 // Required versions
-define('REQUIRED_PHP_VERSION', '5.2.0');
+define('REQUIRED_PHP_VERSION', '5.3.0');
 
 // Access codes
 define('ACCESS_FREE', 0);