diff --git a/conf/nginx.conf b/conf/nginx.conf
index e0f98f2..462eb67 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -3,6 +3,11 @@ events {
 }
 
 http {
+    map $scheme $fastcgi_https {
+        default off;
+        https on;
+    }
+
     upstream was {
         server maru-egg:8080;
     }
@@ -34,6 +39,7 @@ http {
             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 HTTPS $fastcgi_https;
         }
     }
-}
+}
\ No newline at end of file