diff --git a/src/parse-tag.js b/src/parse-tag.js
index 570436d..8c6a7e0 100644
--- a/src/parse-tag.js
+++ b/src/parse-tag.js
@@ -1,5 +1,5 @@
 import lookup from 'void-elements'
-const attrRE = /\s([^'"/\s><]+?)[\s/>]|([^\s=]+)=\s?(".*?"|'.*?')/g
+const attrRE = /\s([^'"/\s><]+?)[\s/>]|([^\s=]+)=\s?("(.|\n)*?"|'(.|\n)*?')/g
 
 export default function stringify(tag) {
   const res = {