diff --git a/Caddyfile b/Caddyfile
index 535aadf..89b32cf 100644
--- a/Caddyfile
+++ b/Caddyfile
@@ -1,5 +1,11 @@
 {
     auto_https off
+    # home-caddy (docker bridge 사설망) 가 TLS 를 종단하고 X-Forwarded-Proto: https
+    # 를 전달. trusted_proxies 없으면 Caddy 가 incoming scheme (http) 로 덮어써
+    # FastAPI 307 redirect 의 Location 헤더가 http:// 로 나가 mixed-content block.
+    servers {
+        trusted_proxies static private_ranges
+    }
 }
 
 http://document.hyungi.net {