diff --git a/roles/nginx/server/templates/nginx.conf.j2 b/roles/nginx/server/templates/nginx.conf.j2
index 0baf4e0..1bc0e2b 100644
--- a/roles/nginx/server/templates/nginx.conf.j2
+++ b/roles/nginx/server/templates/nginx.conf.j2
@@ -17,6 +17,14 @@ http {
     proxy_ssl_server_name on;
     proxy_ssl_verify on;
 
+    map $http_upgrade $connection_upgrade {
+        default upgrade;
+        '' close;
+    }
+    proxy_set_header Connection $connection_upgrade;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_http_version 1.1;
+
 {% if plaintext is defined %}
     server {
         listen 80;