sitemap.xml in jekyll-sitemap-0.6.1

- old
+ new

@@ -31,10 +31,10 @@
   {% endunless %}{% endfor %}
   {% endunless %}{% endfor %}
   {% for file in site.html_files %}
   <url>
     <loc>{{ site_url }}{{ file.path }}</loc>
-    <lastmod>{{ file.modified_time | date:"%Y-%m-%dT%H:%M:%SZ" }}</lastmod>
+    <lastmod>{{ file.modified_time | date_to_xmlschema }}</lastmod>
     <priority>0.6</priority>
   </url>
   {% endfor %}
 </urlset>