diff --git a/modules/cli/nix.nix b/modules/cli/nix.nix
index 0769b1c..39b68b5 100644
--- a/modules/cli/nix.nix
+++ b/modules/cli/nix.nix
@@ -1,10 +1,12 @@
 { config, lib, pkgs, ... }:
 
 {
-  nix.package = pkgs.nixFlakes;
-  nix.gc = {
-    automatic = true;
-    options = "--max-freed $((32 * 1024**3)) --delete-older-than 14d";
+  nix = {
+    package = pkgs.nix_2_4;
+    gc = {
+      automatic = true;
+      options = "--max-freed $((32 * 1024**3)) --delete-older-than 14d";
+    };
+    optimise.automatic = true;
   };
-  nix.optimise.automatic = true;
 }