diff --git a/scripts/update_nixpkgs.sh b/scripts/update_nixpkgs.sh
new file mode 100755
index 0000000..64d81c8
--- /dev/null
+++ b/scripts/update_nixpkgs.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+set -xe
+
+VERSION=`curl https://gitea.hillion.co.uk/JakeHillion/nixos/raw/branch/main/flake.lock | nix run nixpkgs#jq -- -r '.nodes."nixpkgs-unstable".locked.rev'`
+nix registry add nixpkgs "github:NixOS/nixpkgs/${VERSION}"