diff --git a/js/ditto.js b/js/ditto.js
index 3bc25a0..bba6d0e 100644
--- a/js/ditto.js
+++ b/js/ditto.js
@@ -21,7 +21,7 @@ var disqusCode = '<h3>留言</h3><div id="disqus_thread"></div>'
 	+ "var disqus_shortname = 'es6'; "
 	+ "(function() {"
 	+ "var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;"
-	+ "dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js';"
+	+ "dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js?time='+Date.now();"
 	+ "(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);"
 	+ " })();"
 	+ '</script>';