diff --git a/nginx.tmpl b/nginx.tmpl
index 38d3904..0bad994 100644
--- a/nginx.tmpl
+++ b/nginx.tmpl
@@ -47,7 +47,7 @@ proxy_http_version 1.1;
 proxy_buffering off;
 proxy_set_header Host $http_host;
 proxy_set_header Upgrade $http_upgrade;
-proxy_set_header Connection "";
+proxy_set_header Connection $proxy_connection;
 proxy_set_header X-Real-IP $remote_addr;
 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;