diff --git a/lib/Parser.js b/lib/Parser.js
index 858006a9d..5f26cec5d 100644
--- a/lib/Parser.js
+++ b/lib/Parser.js
@@ -68,7 +68,12 @@ var emptyTags = {
 	link: true,
 	meta: true,
 	param: true,
-	embed: true
+	embed: true,
+	command: true,
+	keygen: true,
+	source: true,
+	track: true,
+	wbr: true
 };
 
 function Parser(cbs, options){