diff --git a/example.html b/example.html
index 2fd2b6b..e4e2ed5 100644
--- a/example.html
+++ b/example.html
@@ -16,6 +16,7 @@
 			misc: [
 				['i am an arrray'],
 				{i:{am:{an:'object'}}},
+				new Date(),
 				'string',
 				42,
 				true,
@@ -25,4 +26,4 @@
 		});
 	</script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/index.js b/index.js
index 94fb122..a0be297 100644
--- a/index.js
+++ b/index.js
@@ -27,6 +27,7 @@ function type (doc) {
   if (doc === null) return 'null'
   if (Array.isArray(doc)) return 'array'
   if (typeof doc === 'string' && /^https?:/.test(doc)) return 'link'
+  if (typeof doc === 'object' && typeof doc.toISOString === 'function') return 'date'
 
   return typeof doc
 }
@@ -63,6 +64,9 @@ module.exports = function (doc, styleFile) {
       case 'number':
         return '<span ' + style('json-markup-number') + '>' + obj + '</span>'
 
+      case 'date':
+        return '<span class="json-markup-string">"' + escape(obj.toISOString()) + '"</span>'
+
       case 'null':
         return '<span ' + style('json-markup-null') + '>null</span>'