diff --git a/doc/example-nginx-triton1.conf b/doc/example-nginx-triton1.conf
index 1b7a90977..146e4bdd7 100644
--- a/doc/example-nginx-triton1.conf
+++ b/doc/example-nginx-triton1.conf
@@ -22,6 +22,7 @@ http {
   server {
     listen 7900;
     location / {
+      proxy_http_version 1.1;
       proxy_set_header Upgrade $http_upgrade;
       proxy_set_header Connection "Upgrade";
       proxy_pass https://backend/YOUR_AUTH_TOKEN_HERE/;