diff --git a/develop/print.html b/develop/print.html
index c6f2515634..ec92c0dca4 100644
--- a/develop/print.html
+++ b/develop/print.html
@@ -1042,7 +1042,7 @@ we do not recommend exposing them to the public internet without good reason.</p
 <p>This document explains how to enable VoIP relaying on your Home Server with
 TURN.</p>
 <p>The synapse Matrix Home Server supports integration with TURN server via the
-<a href="http://tools.ietf.org/html/draft-uberti-behave-turn-rest-00">TURN server REST API</a>. This
+<a href="https://tools.ietf.org/html/draft-uberti-behave-turn-rest-00">TURN server REST API</a>. This
 allows the Home Server to generate credentials that are valid for use on the
 TURN server through the use of a secret shared between the Home Server and the
 TURN server.</p>
diff --git a/develop/turn-howto.html b/develop/turn-howto.html
index 71483aca27..a26ab61236 100644
--- a/develop/turn-howto.html
+++ b/develop/turn-howto.html
@@ -186,7 +186,7 @@
 <p>This document explains how to enable VoIP relaying on your Home Server with
 TURN.</p>
 <p>The synapse Matrix Home Server supports integration with TURN server via the
-<a href="http://tools.ietf.org/html/draft-uberti-behave-turn-rest-00">TURN server REST API</a>. This
+<a href="https://tools.ietf.org/html/draft-uberti-behave-turn-rest-00">TURN server REST API</a>. This
 allows the Home Server to generate credentials that are valid for use on the
 TURN server through the use of a secret shared between the Home Server and the
 TURN server.</p>