diff --git a/hosts/vm/configuration.nix b/hosts/vm/configuration.nix
index 22430f1..dc692a6 100644
--- a/hosts/vm/configuration.nix
+++ b/hosts/vm/configuration.nix
@@ -20,5 +20,11 @@
     options = [ "mode=0755" ];
   };
 
+  fileSystems."/nix/store" = {
+    fsType = "btrfs";
+    device = "/dev/vda2";
+    options = [ "nodev,noatime,compress-force=zstd:1,discard=async" ];
+  };
+
   system.stateVersion = "25.05";
 }