diff --git a/flake.nix b/flake.nix
index a3de435..8f6f077 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,8 @@
 {
   description = "Build Rust projects with ease. No configuration, no code generation; IFD and sandbox friendly.";
 
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs?ref=nixpkgs-unstable";
+
   outputs = { self, nixpkgs }:
     let
       forAllSystems = nixpkgs.lib.genAttrs [ "x86_64-linux" "x86_64-darwin" "i686-linux" "aarch64-linux" "aarch64-darwin" ];