diff --git a/flake.nix b/flake.nix
index 4e927a55b1..ed7b93bae7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -23,7 +23,7 @@
       pkgs = import nixpkgs { inherit system; };
       inherit (pkgs) lib;
 
-      version = "0.2.0-pre";
+      version = "0.4.0-pre";
 
       treefmtEval = treefmt-nix.lib.evalModule pkgs ./treefmt.nix;
     in