Index: trunk/src/wp-content/themes/twentyfifteen/functions.php
===================================================================
--- trunk/src/wp-content/themes/twentyfifteen/functions.php	(revision 30976)
+++ trunk/src/wp-content/themes/twentyfifteen/functions.php	(working copy)
@@ -231,10 +231,27 @@
 		'expand'   => '<span class="screen-reader-text">' . __( 'expand child menu', 'twentyfifteen' ) . '</span>',
 		'collapse' => '<span class="screen-reader-text">' . __( 'collapse child menu', 'twentyfifteen' ) . '</span>',
 	) );
+
+	wp_enqueue_script( 'twentyfifteen-html5shiv', get_template_directory_uri() . '/js/html5.js', array(), '3.7.0', false );
 }
 add_action( 'wp_enqueue_scripts', 'twentyfifteen_scripts' );
 
 /**
+ * Enclose html5shiv in a IE condictional
+ *
+ * @since Twenty Fifteen 1.1
+ */
+function twentyfifteen_html5shiv( $tag, $handle, $src ) {
+	if ( 'twentyfifteen-html5shiv' === $handle ) {
+		$tag = "<!--[if lt IE 9]>\n";
+		$tag .= "<script type='text/javascript' src='$src'></script>\n";
+		$tag .= "<![endif]-->\n";
+	}
+	return $tag;
+}
+add_filter( 'script_loader_tag', 'twentyfifteen_html5shiv', 10, 3 );
+
+/**
  * Add featured image as background image to post navigation elements.
  *
  * @since Twenty Fifteen 1.0
Index: trunk/src/wp-content/themes/twentyfifteen/header.php
===================================================================
--- trunk/src/wp-content/themes/twentyfifteen/header.php	(revision 30976)
+++ trunk/src/wp-content/themes/twentyfifteen/header.php	(working copy)
@@ -15,9 +15,6 @@
 	<meta name="viewport" content="width=device-width">
 	<link rel="profile" href="http://gmpg.org/xfn/11">
 	<link rel="pingback" href="<?php bloginfo( 'pingback_url' ); ?>">
-	<!--[if lt IE 9]>
-	<script src="<?php echo esc_url( get_template_directory_uri() ); ?>/js/html5.js"></script>
-	<![endif]-->
 	<script>(function(){document.documentElement.className='js'})();</script>
 	<?php wp_head(); ?>
 </head>