diff --git a/machines/storage/s0/default.nix b/machines/storage/s0/default.nix
index 72e6a78..b4329f1 100644
--- a/machines/storage/s0/default.nix
+++ b/machines/storage/s0/default.nix
@@ -271,6 +271,9 @@
       service.enableregistration = false;
     };
   };
+  backup.group."vikunja".paths = [
+    "/var/lib/vikunja"
+  ];
 
   boot.binfmt.emulatedSystems = [ "aarch64-linux" "armv7l-linux" ];
 }
diff --git a/machines/storage/s0/home-automation.nix b/machines/storage/s0/home-automation.nix
index 1256013..a356620 100644
--- a/machines/storage/s0/home-automation.nix
+++ b/machines/storage/s0/home-automation.nix
@@ -3,7 +3,6 @@
 {
   services.esphome.enable = true;
 
-  # TODO lock down
   services.mosquitto = {
     enable = true;
     listeners = [