diff --git a/nginx.conf b/nginx.conf
index b7e719e..7dac1c4 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -16,6 +16,9 @@ http {
             # Use the placeholders for the proxy pass (these will be replaced by envsubst)
             proxy_pass ${PROTOCOL}://$BACKEND_ADDRESS:$BACKEND_PORT;
 #            proxy_pass http://$BACKEND_ADDRESS:$BACKEND_PORT;
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "Upgrade";
             proxy_set_header Host $host;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;