diff --git a/transmission.subdomain.conf.sample b/transmission.subdomain.conf.sample
index e78e0f0..7007f09 100644
--- a/transmission.subdomain.conf.sample
+++ b/transmission.subdomain.conf.sample
@@ -25,6 +25,7 @@ server {
         include /config/nginx/proxy.conf;
         resolver 127.0.0.11 valid=30s;
         set $upstream_transmission transmission;
+        proxy_pass_header  X-Transmission-Session-Id;
         proxy_pass http://$upstream_transmission:9091;
     }