diff --git a/nixos/modules/impermanence.nix b/nixos/modules/impermanence.nix
index 267c9d1..5c6142e 100644
--- a/nixos/modules/impermanence.nix
+++ b/nixos/modules/impermanence.nix
@@ -39,6 +39,7 @@ config = mkIf cfg.enable {
       "/etc/ssh/ssh_host_ed25519_key.pub"
       "/etc/ssh/ssh_host_rsa_key"
       "/etc/ssh/ssh_host_rsa_key.pub"
+      "/var/lib/${config.services.prometheus.stateDir}"
     ];
   };
   environment.etc.machine-id.source = "${cfg.storagePath}/machine-id";
diff --git a/nixos/roles/default.nix b/nixos/roles/default.nix
index bc94eff..b536d28 100644
--- a/nixos/roles/default.nix
+++ b/nixos/roles/default.nix
@@ -56,5 +56,5 @@ services = {
       PasswordAuthentication = false;
     };
   };
-  };
+};
 }