diff --git a/global/overlay/etc/puppet/modules/cdn/templates/cache/haproxy.cfg.erb b/global/overlay/etc/puppet/modules/cdn/templates/cache/haproxy.cfg.erb
index 0c5d328..156589e 100644
--- a/global/overlay/etc/puppet/modules/cdn/templates/cache/haproxy.cfg.erb
+++ b/global/overlay/etc/puppet/modules/cdn/templates/cache/haproxy.cfg.erb
@@ -29,9 +29,9 @@ defaults
 
 frontend customer
 	bind <%= @cache_secrets['customers'][@customer]['ip4'] %>:80
-	bind <%= @cache_secrets['customers'][@customer]['ip6'] %>:80
+	bind [<%= @cache_secrets['customers'][@customer]['ip6'] %>]:80
 	bind <%= @cache_secrets['customers'][@customer]['ip4'] %>:443 ssl crt /certs-private/combined.pem
-	bind <%= @cache_secrets['customers'][@customer]['ip6'] %>:443 ssl crt /certs-private/combined.pem
+	bind [<%= @cache_secrets['customers'][@customer]['ip6'] %>]:443 ssl crt /certs-private/combined.pem
 	default_backend varnish
 
 backend varnish