diff --git a/nixos/boxes/bolty/home-assistant.nix b/nixos/boxes/bolty/home-assistant.nix
index f53fa413..dc46a828 100644
--- a/nixos/boxes/bolty/home-assistant.nix
+++ b/nixos/boxes/bolty/home-assistant.nix
@@ -7,7 +7,20 @@ let
 in {
   imports = [ ../nginx.nix ./virtualisation.nix ];
 
-  networking.firewall.allowedTCPPorts = [ port ];
+  networking.firewall.allowedTCPPorts = [ port 1883  ];
+  services.mosquitto = {
+  enable = true;
+    listeners = [
+      {
+        port = 1883;
+        omitPasswordAuth = true;
+        users = {};
+        settings = {
+          allow_anonymous = true;
+        };
+        acl = [ "topic readwrite #" ];
+      }];
+  };
 
   services.nginx = {
     virtualHosts = {