diff --git a/docs/_protdocs.html b/docs/_protdocs.html
index 286b1854ed..75a273f6fb 100644
--- a/docs/_protdocs.html
+++ b/docs/_protdocs.html
@@ -28,6 +28,7 @@
 <li> <a href="http-cookies.html">HTTP Cookies</a>,
 <li> <a href="http2.html">HTTP/2</a>,
 <li> <a href="http3.html">HTTP/3</a>,
+<li> <a href="mqtt.html">MQTT</a>,
 <li> <a href="sslcerts.html">SSL Certs</a>,
 <li> <a href="ssl-compared.html">SSL libs compared</a>,
 <li> <a href="url-syntax.html">URL syntax</a>