diff --git a/instances/loki/configuration.nix b/instances/loki/configuration.nix
index 71da04e..8068318 100644
--- a/instances/loki/configuration.nix
+++ b/instances/loki/configuration.nix
@@ -318,6 +318,7 @@ with lib; {
         unit_system = "metric";
         time_zone = "Europe/Rome";
         external_url = "https://home-assistant.bertof.net";
+        allowlist_external_dirs = [ "/tmp" ];
       };
 
       http = {