diff --git a/.zuul.yml b/.zuul.yml
index 2bf6e0e..9f69e6a 100644
--- a/.zuul.yml
+++ b/.zuul.yml
@@ -9,4 +9,4 @@ browsers:
 concurrency: 1
 tunnel:
   type: ngrok
-  bind_tls: false
+  bind_tls: true