diff --git a/outline-system/outline.yaml b/outline-system/outline.yaml
index 434f103..3de2420 100644
--- a/outline-system/outline.yaml
+++ b/outline-system/outline.yaml
@@ -392,6 +392,10 @@ metadata:
     external-dns.alpha.kubernetes.io/hostname: outline.dooplex.hu,outline.home
     nginx.ingress.kubernetes.io/proxy-body-size: 100m
     nginx.ingress.kubernetes.io/ssl-redirect: "true"
+    nginx.ingress.kubernetes.io/configuration-snippet: |
+      proxy_hide_header X-Frame-Options;
+      proxy_hide_header Content-Security-Policy;
+      add_header X-Frame-Options "ALLOW-FROM https://orsi.dooplex.hu" always;
   labels:
     app.kubernetes.io/instance: outline
     app.kubernetes.io/name: outline