diff --git a/en_US/upgrade/0-upgrade.iredapd.md b/en_US/upgrade/0-upgrade.iredapd.md
index 5dbb081b..a7b7d1ac 100644
--- a/en_US/upgrade/0-upgrade.iredapd.md
+++ b/en_US/upgrade/0-upgrade.iredapd.md
@@ -18,7 +18,7 @@
       If you're running an old Linux/BSD release which doesn't have Python
       3.5+, please stay with iRedAPD-3.6, it's the last release supports Python
       2. if you need to upgrade to iRedAPD-3.6, please follow this upgrade
-      tutorial instead: [Upgrade iRedAPD from v1.3.x or earlier versions to v3.6](./upgrade.iredapd.py2.html).
+      tutorial instead: [Upgrade iRedAPD from v1.4.0 or later releases to v3.6](./upgrade.iredapd.py2.html).
 
 This tutorial describes how to upgrade iRedAPD from `1.4.0` or later releases
 to the latest stable release on listed distribution releases listed above.
diff --git a/html/upgrade.iredapd.html b/html/upgrade.iredapd.html
index ebf8fe17..61bb1640 100644
--- a/html/upgrade.iredapd.html
+++ b/html/upgrade.iredapd.html
@@ -40,7 +40,7 @@
 <p>If you're running an old Linux/BSD release which doesn't have Python
   3.5+, please stay with iRedAPD-3.6, it's the last release supports Python
   2. if you need to upgrade to iRedAPD-3.6, please follow this upgrade
-  tutorial instead: <a href="./upgrade.iredapd.py2.html">Upgrade iRedAPD from v1.3.x or earlier versions to v3.6</a>.</p>
+  tutorial instead: <a href="./upgrade.iredapd.py2.html">Upgrade iRedAPD from v1.4.0 or later releases to v3.6</a>.</p>
 </div>
 <p>This tutorial describes how to upgrade iRedAPD from <code>1.4.0</code> or later releases
 to the latest stable release on listed distribution releases listed above.</p>