diff --git a/_includes/update-list.html b/_includes/update-list.html
index cdeebeb..93684c3 100644
--- a/_includes/update-list.html
+++ b/_includes/update-list.html
@@ -1,16 +1,17 @@
-
+
{% assign MAX_SIZE = 5 %}
{% assign all_list = '' | split: '' %}
{% for post in site.posts %}
- {% if post.last_modified_at and post.last_modified_at != post.date %}
- {% capture elem %}
- {{- post.last_modified_at | date: "%Y%m%d%H%M%S" -}}::{{- forloop.index0 -}}
- {% endcapture %}
- {% assign all_list = all_list | push: elem %}
- {% endif %}
+ {% assign datetime = post.last_modified_at | default: post.date %}
+
+ {% capture elem %}
+ {{- datetime | date: "%Y%m%d%H%M%S" -}}::{{- forloop.index0 -}}
+ {% endcapture %}
+
+ {% assign all_list = all_list | push: elem %}
{% endfor %}
{% assign all_list = all_list | sort | reverse %}