diff --git a/05backends.cfg b/05backends.cfg
index fdaf9d9..a38f805 100644
--- a/05backends.cfg
+++ b/05backends.cfg
@@ -155,5 +155,5 @@ backend uptime-kuma
   http-response set-header X-Frame-Options "SAMEORIGIN"
   http-response set-header X-Content-Type-Options "nosniff"
   http-response set-header Referrer-Policy "strict-origin-when-cross-origin"
-  http-response set-header Cross-Origin-Resource-Policy "same-origin"
+  http-response set-header Cross-Origin-Resource-Policy "cross-origin"
   server uptime-kuma mxmon:3001 check