diff --git a/website/source/docs/secrets/mysql/index.html.md b/website/source/docs/secrets/mysql/index.html.md
index 0f20ae50bc..41c969cb8c 100644
--- a/website/source/docs/secrets/mysql/index.html.md
+++ b/website/source/docs/secrets/mysql/index.html.md
@@ -161,6 +161,15 @@ the default on versions prior to that.
       </li>
     </ul>
   </dd>
+  <dd>
+    <ul>
+      <li>
+        <span class="param">max_idle_connections</span>
+        <span class="param-flags">optional</span>
+        Maximum number of idle connections to the database. A zero uses the value of `max_open_connections` and a negative value disables idle connections. If larger than `max_open_connections` it will be reduced to be equal.
+      </li>
+    </ul>
+  </dd>
   <dd>
     <ul>
       <li>