diff --git a/lass/2configs/websites/util.nix b/lass/2configs/websites/util.nix
index 23f417195..55be8a8d9 100644
--- a/lass/2configs/websites/util.nix
+++ b/lass/2configs/websites/util.nix
@@ -79,6 +79,8 @@ rec {
           add_header X-Frame-Options "SAMEORIGIN";
           add_header X-XSS-Protection "1; mode=block";
           add_header X-Robots-Tag none;
+          add_header X-Download-Options noopen;
+          add_header X-Permitted-Cross-Domain-Policies none;
 
           # Path to the root of your installation
           root /srv/http/${domain}/;