diff --git a/config/nginx.auth.conf b/config/nginx.auth.conf
index 6713edb..132284c 100644
--- a/config/nginx.auth.conf
+++ b/config/nginx.auth.conf
@@ -42,6 +42,7 @@ server {
         proxy_pass_request_body  off;
         proxy_set_header         Content-Length "";
         proxy_set_header         refresh-token $refresh_token;
+        proxy_set_header         auth-mode $AUTH_MODE;
         proxy_intercept_errors   on;
     }