diff --git a/wp-admin/includes/update-core.php b/wp-admin/includes/update-core.php
index fe34eb0cb..56308de94 100644
--- a/wp-admin/includes/update-core.php
+++ b/wp-admin/includes/update-core.php
@@ -292,8 +292,8 @@ function update_core($from, $to) {
 
 	$php_version    = phpversion();
 	$mysql_version  = $wpdb->db_version();
-	$required_php_version = '4.3';
-	$required_mysql_version = '4.1.2';
+	$required_php_version = '5.2.4';
+	$required_mysql_version = '5.0';
 	$wp_version = '3.1';
 	$php_compat     = version_compare( $php_version, $required_php_version, '>=' );
 	$mysql_compat   = version_compare( $mysql_version, $required_mysql_version, '>=' ) || file_exists( WP_CONTENT_DIR . '/db.php' );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b27c9ebe0..52ae5ee89 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -50,11 +50,11 @@ $manifest_version = '20111113';
  *
  * @global string $required_php_version
  */
-$required_php_version = '4.3';
+$required_php_version = '5.2.4';
 
 /**
  * Holds the required MySQL version
  *
  * @global string $required_mysql_version
  */
-$required_mysql_version = '4.1.2';
+$required_mysql_version = '5.0';