diff --git a/deployment/nginx/ui-dashboard.gnerim.ru.conf b/deployment/nginx/ui-dashboard.gnerim.ru.conf
index accd0d44..cdc3b3f9 100644
--- a/deployment/nginx/ui-dashboard.gnerim.ru.conf
+++ b/deployment/nginx/ui-dashboard.gnerim.ru.conf
@@ -88,6 +88,11 @@ server {
         proxy_cache_lock       on;
         proxy_cache_use_stale  error timeout updating http_403 http_500 http_502 http_503 http_504;
         proxy_cache_bypass     $http_cache_control;
+        # Same rationale as /api/dictionary/ — refuse to cache the WAF
+        # block page (text/html). Prevents `proxy_cache_use_stale` from
+        # later serving that HTML as a stale 200 when the WAF returns 403
+        # on a fresh fetch.
+        proxy_no_cache         $no_cache_html;
         add_header             X-Cache-Status $upstream_cache_status always;
     }