diff --git a/flake.nix b/flake.nix
index bc6321d..e2b105d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,6 +3,7 @@
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-21.11-small";
+    unstable.url = "github:NixOS/nixpkgs/nixos-unstable-small";
 
     nix-super.url = "git+https://git.privatevoid.net/max/nix-super-fork";
     nix-super.inputs.nixpkgs.follows = "nixpkgs";