diff --git a/modules/nixos/boot/impermanence.nix b/modules/nixos/boot/impermanence.nix
index ddc6af3..c7ab941 100644
--- a/modules/nixos/boot/impermanence.nix
+++ b/modules/nixos/boot/impermanence.nix
@@ -57,6 +57,7 @@
             "/etc/ssh/ssh_host_ed25519_key.pub"
             "/etc/ssh/ssh_host_rsa_key"
             "/etc/ssh/ssh_host_rsa_key.pub"
+            "/etc/ly/save.txt"
           ]
           ++ cfg.impermanence.files;
       };