diff --git a/nginx/default.conf b/nginx/default.conf
index 9be82cf..a0e217a 100644
--- a/nginx/default.conf
+++ b/nginx/default.conf
@@ -370,6 +370,7 @@ server {
   }
 
   # tarot-lab API (agent-office에서 분리)
+  # Claude Sonnet 3-card 해석은 30~90초 + truncation reroll 시 추가. 600s 안전 마진.
   location /api/tarot/ {
     resolver 127.0.0.11 valid=10s;
     set $tarot_backend tarot-lab:8000;
@@ -378,8 +379,8 @@ server {
     proxy_set_header Host $host;
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-    proxy_read_timeout 300s;
-    proxy_send_timeout 300s;
+    proxy_read_timeout 600s;
+    proxy_send_timeout 600s;
     proxy_connect_timeout 60s;
     proxy_pass http://$tarot_backend$request_uri;
   }