diff --git a/puppet/zulip/templates/uwsgi.ini.template.erb b/puppet/zulip/templates/uwsgi.ini.template.erb
index b5fec3f491..eb0cd23826 100644
--- a/puppet/zulip/templates/uwsgi.ini.template.erb
+++ b/puppet/zulip/templates/uwsgi.ini.template.erb
@@ -11,3 +11,4 @@ post-buffering=4096
 env= LANG=en_US.UTF-8
 uid=zulip
 gid=zulip
+listen=512