diff --git a/flake.nix b/flake.nix
index 0ef3fcf..057a196 100644
--- a/flake.nix
+++ b/flake.nix
@@ -66,7 +66,7 @@
       common-host-config = hostname: hostOpts: let
         config-dir = ./config;
         build-timestamp =
-          concat-timestamp last-modified-timestamp;
+          concat-timestamp latest-modified-timestamp;
       in { config, ... }: {
         imports = [
           fudo-home.nixosModule