diff --git a/nginx/nginx.prod.conf b/nginx/nginx.prod.conf
index 5d3b8249..930e2071 100644
--- a/nginx/nginx.prod.conf
+++ b/nginx/nginx.prod.conf
@@ -31,7 +31,7 @@ http {
 
     # ✅ HTTPS 서버 블록
     server {
-        listen 443 ssl http2;
+        listen 443 ssl;
         server_name kokomen.kr;
 
         ssl_certificate     /etc/letsencrypt/live/kokomen.kr/fullchain.pem;
@@ -44,13 +44,12 @@ http {
 
         location / {
             proxy_pass         http://next-server/;
-            proxy_http_version 2.0;
+            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;
-            proxy_set_header   X-Forwarded-Proto $scheme;
-            proxy_set_header   X-Forwarded-Host $host;
-            proxy_set_header   X-Forwarded-Port $server_port;
+            proxy_cache_bypass $http_upgrade;
         }
     }