diff --git a/nodes/rx300.py b/nodes/rx300.py
index 79414f2..8eeff37 100644
--- a/nodes/rx300.py
+++ b/nodes/rx300.py
@@ -275,6 +275,10 @@ nodes['rx300'] = {
             },
         },
         'nginx': {
+            'security.txt': {
+                'contact': 'mailto:security@kunsmann.eu',
+                'Encryption': 'https://franzi.business/gpg_hi-kunsmann.eu.asc',
+            },
             'vhosts': {
                 'element-web': {'ssl': '_.franzi.business'},
                 'gitea': {'ssl': '_.franzi.business'},