diff --git a/services/nix-cache/harmonia.nix b/services/nix-cache/harmonia.nix
index e80a1c5..552c257 100644
--- a/services/nix-cache/harmonia.nix
+++ b/services/nix-cache/harmonia.nix
@@ -10,4 +10,7 @@
     package = pkgs.unstable.harmonia;
     signKeyPaths = [ config.sops.secrets.cache-secret.path ];
   };
+  systemd.services.harmonia = {
+    environment.RUST_LOG = "info,actix_web=debug";
+  };
 }