diff --git a/services/nix-cache/proxy.nix b/services/nix-cache/proxy.nix
index 17e4f11..1508b87 100644
--- a/services/nix-cache/proxy.nix
+++ b/services/nix-cache/proxy.nix
@@ -6,6 +6,9 @@
     configFile = pkgs.writeText "Caddyfile" ''
       {
         acme_ca https://ca.home.2rjus.net/acme/acme/directory
+        metrics {
+          per_host
+        }
       }
 
       nix-cache.home.2rjus.net {