diff --git a/roles/nginx/application/templates/nginx.conf b/roles/nginx/application/templates/nginx.conf
index df4f81c..1bd7d28 100644
--- a/roles/nginx/application/templates/nginx.conf
+++ b/roles/nginx/application/templates/nginx.conf
@@ -56,6 +56,11 @@ http {
   # gzip_http_version 1.1;
   gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
 
+  map $http_upgrade $connection_upgrade {
+    default upgrade;
+    '' close;
+  }
+
   ##
   # HTTP to HTTPs redirect
   ##