diff --git a/static/Caddyfile b/static/Caddyfile
index 0640323..1683899 100644
--- a/static/Caddyfile
+++ b/static/Caddyfile
@@ -38,6 +38,7 @@ http://static-mat-services.fly.dev/ {
       img-src 'self';
       style-src 'self' https://cdn.jsdelivr.net/ 'unsafe-inline';
       font-src 'self' https://cdn.jsdelivr.net/;
+      form-action 'none';
       frame-ancestors 'none';
       base-uri 'none';
       upgrade-insecure-requests;