diff --git a/roles/nginx_site/templates/site.conf.j2 b/roles/nginx_site/templates/site.conf.j2
index ecc4f64..a967023 100644
--- a/roles/nginx_site/templates/site.conf.j2
+++ b/roles/nginx_site/templates/site.conf.j2
@@ -51,7 +51,7 @@ server {
     root /srv/web/{{ nginx_site_name }};
 {% else %}
     location /.well-known/acme-challenge/ {
-        proxy_pass http://certbot.home.foo.sh/.well-known/acme-challenge/;
+        proxy_pass https://certbot.home.foo.sh/.well-known/acme-challenge/;
     }
     location / {
 {% if nginx_site_redirect is defined %}