diff --git a/src/sizzle b/src/sizzle
index badbeffba..f51e83a9c 160000
--- a/src/sizzle
+++ b/src/sizzle
@@ -1 +1 @@
-Subproject commit badbeffba4714432a663f1150d3ffb1e20b6e191
+Subproject commit f51e83a9c9bd78f1cafda9fa9b3b93fefa61c3ae
diff --git a/test/data/testrunner.js b/test/data/testrunner.js
index ef3a55568..9b77ac39f 100644
--- a/test/data/testrunner.js
+++ b/test/data/testrunner.js
@@ -60,7 +60,7 @@ function testSubproject( label, url, risTests ) {
 		success: function( data, status, jqXHR ) {
 			var page = jQuery.parseHTML(
 				// replace html/head with dummy elements so they are represented in the DOM
-				( data || "" ).replace( /(<\/?)(?:html|head)\b/g, "$1div" ),
+				( data || "" ).replace( /<\/?((!DOCTYPE|html|head)\b.*?)>/gi, "[$1]" ),
 				document,
 				true
 			);