diff --git a/.docker/nginx/nginx.conf b/.docker/nginx/nginx.conf
index 50a26d4..c77a05b 100644
--- a/.docker/nginx/nginx.conf
+++ b/.docker/nginx/nginx.conf
@@ -13,7 +13,9 @@ server {
         fastcgi_index index.php;
         include fastcgi_params;
         fastcgi_read_timeout 300;
-        add_header X-Frame-Options "SAMEORIGIN";
+        add_header Content-Security-Policy "frame-ancestors 'none'";
+        add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;
+        add_header X-Frame-Options "DENY";
         add_header X-server-header "Powered by Jield - info@jield.nl";
         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
         fastcgi_param PATH_INFO $fastcgi_path_info;
diff --git a/README.md b/README.md
index 084b688..8fa316a 100644
--- a/README.md
+++ b/README.md
@@ -24,8 +24,8 @@ PHP versions:
 
 - 8.1.32 (only Azure container)
 - 8.2.28
-- 8.3.21
-- 8.4.7
+- 8.3.22
+- 8.4.8
 
 Azure containers contain an SSH server and default Azure credentials.
 Johan van der Heide, Jield BV (johan.vanderheide@jield.nl)