diff --git a/flake.nix b/flake.nix
index cce24a3..9c03c6e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,7 +1,7 @@
 {
   description = "Bare-metal Rust on Zynq-7000";
 
-  inputs.nixpkgs.url = github:NixOS/nixpkgs/nixos-unstable;
+  inputs.nixpkgs.url = github:thomasfire/nixpkgs/nixos-22.11;
   inputs.mozilla-overlay = { url = github:mozilla/nixpkgs-mozilla; flake = false; };
 
   outputs = { self, nixpkgs, mozilla-overlay }: