diff --git a/wp-includes/script-loader.php b/wp-includes/script-loader.php
index 265e91ebb1..defcc77321 100644
--- a/wp-includes/script-loader.php
+++ b/wp-includes/script-loader.php
@@ -466,7 +466,7 @@ function wp_default_styles( &$styles ) {
 	$styles->add( 'media', "/wp-admin/css/media$suffix.css", array(), '20091029' );
 	$styles->add( 'widgets', "/wp-admin/css/widgets$suffix.css", array(), '20091118' );
 	$styles->add( 'dashboard', "/wp-admin/css/dashboard$suffix.css", array(), '20100213' );
-	$styles->add( 'install', "/wp-admin/css/install$suffix.css", array(), '20090514' );
+	$styles->add( 'install', "/wp-admin/css/install$suffix.css", array(), '20100228' ); // Readme as well
 	$styles->add( 'theme-editor', "/wp-admin/css/theme-editor$suffix.css", array(), '20090625' );
 	$styles->add( 'press-this', "/wp-admin/css/press-this$suffix.css", array(), '20091022' );
 	$styles->add( 'thickbox', '/wp-includes/js/thickbox/thickbox.css', array(), '20090514' );