diff --git a/modules/system/system.install b/modules/system/system.install
index 1dac3485e25..44fc6696f44 100644
--- a/modules/system/system.install
+++ b/modules/system/system.install
@@ -2,9 +2,9 @@
 // $Id$
 
 define('DRUPAL_MINIMUM_PHP',    '4.3.3');
-define('DRUPAL_MINIMUM_MYSQL',  '3.23.17'); // If using MySQL
-define('DRUPAL_MINIMUM_PGSQL',  '7.3');  // If using PostgreSQL
-define('DRUPAL_MINIMUM_APACHE', '1.3');  // If using Apache
+define('DRUPAL_MINIMUM_MYSQL',  '4.0.0'); // If using MySQL
+define('DRUPAL_MINIMUM_PGSQL',  '7.3');   // If using PostgreSQL
+define('DRUPAL_MINIMUM_APACHE', '1.3');   // If using Apache
 
 /**
  * Test and report Drupal installation requirements.