diff --git a/hosts/nix-cache01/configuration.nix b/hosts/nix-cache01/configuration.nix
index 06817a3..2eb63ba 100644
--- a/hosts/nix-cache01/configuration.nix
+++ b/hosts/nix-cache01/configuration.nix
@@ -11,6 +11,10 @@
     ../../common/vm
   ];
 
+  fileSystems."/nix" = {
+    device = "/dev/disk/by-label/nixcache";
+    fsType = "xfs";
+  };
   nixpkgs.config.allowUnfree = true;
   # Use the systemd-boot EFI boot loader.
   boot.loader.grub = {