diff --git a/configuration.yaml b/configuration.yaml
index 06413e9..56cfcf1 100644
--- a/configuration.yaml
+++ b/configuration.yaml
@@ -82,3 +82,8 @@ generic_hygrostat:
 
 frontend:
   themes: !include_dir_merge_named themes
+
+freedns:
+  url: !secret freedns6_url
+#  - name: IPv4
+#    url: !secret freedns4_url