diff --git a/cookbooks/gitlab/templates/nginx.conf.erb b/cookbooks/gitlab/templates/nginx.conf.erb
index 900ed0d..11030bd 100644
--- a/cookbooks/gitlab/templates/nginx.conf.erb
+++ b/cookbooks/gitlab/templates/nginx.conf.erb
@@ -24,7 +24,7 @@ server {
     proxy_read_timeout      90;
     proxy_connect_timeout   90;
     proxy_redirect          off;
-    proxy_set_header        Host $host;
+    proxy_set_header        Host $host:$server_port;
     proxy_set_header        X-Real-IP $remote_addr;
     proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
   }
--
libgit2 0.21.2