diff --git a/ui/nginx.conf b/ui/nginx.conf
index adc394a28aa..57aafa71b4c 100644
--- a/ui/nginx.conf
+++ b/ui/nginx.conf
@@ -76,9 +76,16 @@ http {
     # /ui[/<page>] — the dashboard's JS hardcodes URLs under this prefix
     # (router.replace("/ui"), buildLoginUrlWithReturn("/ui/login"), ...).
     # Mirror what FastAPI StaticFiles(mount="/ui") did in the monolithic
-    # proxy_server: serve /ui/<page> from out/<page>.html, with App
-    # Router-aware fallback (out/<page>/index.html) and a final SPA
-    # fallback to out/index.html for client-side routes.
+    # proxy_server: serve /ui/assets/... from out/assets/... and serve
+    # /ui/<page> from out/<page>.html, with App Router-aware fallback
+    # (out/<page>/index.html) and a final SPA fallback to out/index.html
+    # for client-side routes.
+    location ^~ /ui/assets/ {
+      alias /usr/share/nginx/html/assets/;
+      try_files $uri =404;
+      expires 1y;
+      add_header Cache-Control "public, immutable";
+    }
     location = /ui  { try_files /index.html =404; }
     location = /ui/ { try_files /index.html =404; }
     location ~ ^/ui/(.+)$ {