diff --git a/modules/nixos/boot/impermanence.nix b/modules/nixos/boot/impermanence.nix
index b36eabc..46c97e1 100644
--- a/modules/nixos/boot/impermanence.nix
+++ b/modules/nixos/boot/impermanence.nix
@@ -54,6 +54,7 @@
           ++ cfg.impermanence.directories;
 
           files = [
+            "/etc/machine-id"
             "/etc/ssh/ssh_host_ed25519_key"
             "/etc/ssh/ssh_host_ed25519_key.pub"
             "/etc/ssh/ssh_host_rsa_key"