diff --git a/nixos/modules/tmproot.nix b/nixos/modules/tmproot.nix
index 06d0c05..bbf4e42 100644
--- a/nixos/modules/tmproot.nix
+++ b/nixos/modules/tmproot.nix
@@ -145,6 +145,7 @@ in
             # Also the script runs before impermanence does.
             "/var/lib/nixos"
             "/var/lib/systemd"
+            "/var/cache/man"
 
             { directory = "/root/.cache/nix"; mode = "0700"; }
             # Including these unconditionally due to infinite recursion problems...