diff --git a/lib/membership/setting.ex b/lib/membership/setting.ex
index 33445d3..f56daa0 100644
--- a/lib/membership/setting.ex
+++ b/lib/membership/setting.ex
@@ -242,7 +242,7 @@ defmodule Mv.Membership.Setting do
 
     attribute :vereinfacht_api_key, :string do
       allow_nil? true
-      public? true
+      public? false
       description "Vereinfacht API key (Bearer token)"
       sensitive? true
     end