diff --git a/en_US/installation/0-install.iredmail.on.debian.ubuntu.md b/en_US/installation/0-install.iredmail.on.debian.ubuntu.md
index 04d55690..fdbd0086 100644
--- a/en_US/installation/0-install.iredmail.on.debian.ubuntu.md
+++ b/en_US/installation/0-install.iredmail.on.debian.ubuntu.md
@@ -68,7 +68,7 @@ mx.example.com
 ### Enable default official Debian/Ubuntu apt repositories
 
 * iRedMail needs official Debian/Ubuntu apt repositories, please enable them in
-  `/etc/apt/sources.lists`.
+  `/etc/apt/sources.list`.
 * Install package `bzip2` so that you can uncompress downloaded iRedMail package.
 
 ```
diff --git a/en_US/upgrade/0-upgrade.iredmail.0.9.5.1-0.9.6.md b/en_US/upgrade/0-upgrade.iredmail.0.9.5.1-0.9.6.md
index 76645318..067e0338 100644
--- a/en_US/upgrade/0-upgrade.iredmail.0.9.5.1-0.9.6.md
+++ b/en_US/upgrade/0-upgrade.iredmail.0.9.5.1-0.9.6.md
@@ -19,6 +19,7 @@
 
 ## ChangeLog
 
+* Jul  2, 2016: Fixed: SOGo-3.1.3 (and later releases) changed argument used by `sogo-tool` command
 * Jun 10, 2016: Fixed: Nginx doesn't forward real client IP address to SOGo.
 * Jun  8, 2016: Set correct file owner for config file of Roundcube password plugin.
 * Jun  8, 2016: Fixed: one incorrect HELO restriction rule in Postfix.
@@ -151,3 +152,16 @@ steps below to fix it.
 ```
 
 * Restart Nginx service.
+
+### Fixed: SOGo-3.1.3 (and later releases) changed argument used by `sogo-tool` command
+
+SOGo-3.1.3 (and late releases) changed `sogo-tool` argument `expire-autoreply`
+to `update-autoreply`, and it's used in a daily cron job. Please update SOGo
+cron job to fix it.
+
+* Edit SOGo deamon user's cron job with command.
+    * On Linux: ```crontab -e -u sogo```
+    * On FreeBSD: ```crontab -e -u sogod```
+    * On OpenBSD: ```crontab -e -u _sogo```
+
+* Replace the argument `expire-autoreply` by `update-autoreply`.
diff --git a/html/install.iredmail.on.debian.ubuntu-zh_CN.html b/html/install.iredmail.on.debian.ubuntu-zh_CN.html
index 991b4f8b..937c9a05 100644
--- a/html/install.iredmail.on.debian.ubuntu-zh_CN.html
+++ b/html/install.iredmail.on.debian.ubuntu-zh_CN.html
@@ -88,7 +88,7 @@ mx.example.com
 
 <h3 id="debianubuntu-apt">启用 Debian/Ubuntu 默认的官方 apt 软件源</h3>
 <ul>
-<li>iRedMail 依赖 Debian/Ubuntu 官方的 apt 软件源，请在 <code>/etc/apt/sources.lists</code>
+<li>iRedMail 依赖 Debian/Ubuntu 官方的 apt 软件源，请在 <code>/etc/apt/sources.list</code>
   文件里启用它们。</li>
 <li>安装 <code>bzip2</code> 程序用于解压缩文件：</li>
 </ul>
diff --git a/html/install.iredmail.on.debian.ubuntu.html b/html/install.iredmail.on.debian.ubuntu.html
index affc5e60..600e708e 100644
--- a/html/install.iredmail.on.debian.ubuntu.html
+++ b/html/install.iredmail.on.debian.ubuntu.html
@@ -96,7 +96,7 @@ mx.example.com
 <h3 id="enable-default-official-debianubuntu-apt-repositories">Enable default official Debian/Ubuntu apt repositories</h3>
 <ul>
 <li>iRedMail needs official Debian/Ubuntu apt repositories, please enable them in
-  <code>/etc/apt/sources.lists</code>.</li>
+  <code>/etc/apt/sources.list</code>.</li>
 <li>Install package <code>bzip2</code> so that you can uncompress downloaded iRedMail package.</li>
 </ul>
 <pre><code># sudo apt-get install bzip2
diff --git a/html/upgrade.iredmail.0.9.5.1-0.9.6.html b/html/upgrade.iredmail.0.9.5.1-0.9.6.html
index 014681dd..1758d8aa 100644
--- a/html/upgrade.iredmail.0.9.5.1-0.9.6.html
+++ b/html/upgrade.iredmail.0.9.5.1-0.9.6.html
@@ -30,6 +30,7 @@
 <li><a href="#fixed-one-incorrect-helo-restriction-rule-in-postfix">Fixed: one incorrect HELO restriction rule in Postfix</a></li>
 <li><a href="#fixed-incorrect-file-owner-and-permission-of-config-file-of-roundcube-password-plugin">Fixed: incorrect file owner and permission of config file of Roundcube password plugin</a></li>
 <li><a href="#fixed-nginx-doesnt-forward-real-client-ip-address-to-sogo">Fixed: Nginx doesn't forward real client IP address to SOGo</a></li>
+<li><a href="#fixed-sogo-313-and-later-releases-changed-argument-used-by-sogo-tool-command">Fixed: SOGo-3.1.3 (and later releases) changed argument used by sogo-tool command</a></li>
 </ul>
 </li>
 </ul>
@@ -53,6 +54,7 @@ check <a href="../support.html">the details</a> and <a href="../contact.html">co
 </ul>
 <h2 id="changelog">ChangeLog</h2>
 <ul>
+<li>Jul  2, 2016: Fixed: SOGo-3.1.3 (and later releases) changed argument used by <code>sogo-tool</code> command</li>
 <li>Jun 10, 2016: Fixed: Nginx doesn't forward real client IP address to SOGo.</li>
 <li>Jun  8, 2016: Set correct file owner for config file of Roundcube password plugin.</li>
 <li>Jun  8, 2016: Fixed: one incorrect HELO restriction rule in Postfix.</li>
@@ -169,6 +171,23 @@ steps below to fix it.</p>
 
 <ul>
 <li>Restart Nginx service.</li>
+</ul>
+<h3 id="fixed-sogo-313-and-later-releases-changed-argument-used-by-sogo-tool-command">Fixed: SOGo-3.1.3 (and later releases) changed argument used by <code>sogo-tool</code> command</h3>
+<p>SOGo-3.1.3 (and late releases) changed <code>sogo-tool</code> argument <code>expire-autoreply</code>
+to <code>update-autoreply</code>, and it's used in a daily cron job. Please update SOGo
+cron job to fix it.</p>
+<ul>
+<li>
+<p>Edit SOGo deamon user's cron job with command.</p>
+<ul>
+<li>On Linux: <code>crontab -e -u sogo</code></li>
+<li>On FreeBSD: <code>crontab -e -u sogod</code></li>
+<li>On OpenBSD: <code>crontab -e -u _sogo</code></li>
+</ul>
+</li>
+<li>
+<p>Replace the argument <code>expire-autoreply</code> by <code>update-autoreply</code>.</p>
+</li>
 </ul><div class="footer">
     <p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. You can <a href="https://bitbucket.org/zhb/iredmail-docs/get/tip.tar.bz2">download the latest version</a> for offline reading. If you found something wrong, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.</p>
 </div>
diff --git a/tools/markdown2html.py b/tools/markdown2html.py
index 685ff5d1..cbfd5cce 100644
--- a/tools/markdown2html.py
+++ b/tools/markdown2html.py
@@ -11,8 +11,12 @@ import commands
 import web
 import markdown
 
+# https://github.com/FND/markdown-checklist
+from markdown_checklist.extension import ChecklistExtension
+
 # Markdown extensions
-MD_EXTENSIONS = ['toc', 'meta', 'extra', 'footnotes', 'admonition', 'tables', 'attr_list']
+MD_EXTENSIONS = ['toc', 'meta', 'extra', 'footnotes', 'admonition',
+                 'tables', 'attr_list', ChecklistExtension()]
 
 # Get file name
 filename = sys.argv[1]
@@ -31,7 +35,7 @@ for arg in args:
         cmd_opts[var] = value
 
 # Get article title
-if not 'title' in cmd_opts:
+if 'title' not in cmd_opts:
     cmd_opts['title'] = commands.getoutput("""grep 'Title:' %s |awk -F'Title: ' '{print $2}'""" % filename)
 cmd_opts['title'] = cmd_opts['title'].strip()
 
diff --git a/zh_CN/installation/0-install.iredmail.on.debian.ubuntu.md b/zh_CN/installation/0-install.iredmail.on.debian.ubuntu.md
index b2bb311d..42967002 100644
--- a/zh_CN/installation/0-install.iredmail.on.debian.ubuntu.md
+++ b/zh_CN/installation/0-install.iredmail.on.debian.ubuntu.md
@@ -58,7 +58,7 @@ mx.example.com
 
 ### 启用 Debian/Ubuntu 默认的官方 apt 软件源
 
-* iRedMail 依赖 Debian/Ubuntu 官方的 apt 软件源，请在 `/etc/apt/sources.lists`
+* iRedMail 依赖 Debian/Ubuntu 官方的 apt 软件源，请在 `/etc/apt/sources.list`
   文件里启用它们。
 * 安装 `bzip2` 程序用于解压缩文件：