diff --git a/Reverse-Proxy.md b/Reverse-Proxy.md
index 4dfecc5..18b9622 100644
--- a/Reverse-Proxy.md
+++ b/Reverse-Proxy.md
@@ -33,6 +33,7 @@ server {
   location / {
     proxy_set_header   X-Real-IP $remote_addr;
     proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header   Host $host;
     proxy_pass         http://localhost:3001/;
     proxy_http_version 1.1;
     proxy_set_header   Upgrade $http_upgrade;