diff --git a/src/nginx_conf.d/certbot.conf b/src/nginx_conf.d/certbot.conf
index 64007e1..80d06bc 100644
--- a/src/nginx_conf.d/certbot.conf
+++ b/src/nginx_conf.d/certbot.conf
@@ -1,6 +1,7 @@
 server {
     # Listen on plain old HTTP
     listen 80 default_server;
+    listen [::]:80 default_server;
 
     # Pass this particular URL off to certbot, to authenticate HTTPS certificates
     location '/.well-known/acme-challenge' {