diff --git a/provisioners/install-nix-packages-flakes.sh b/provisioners/install-nix-packages-flakes.sh
index d874cfd..26eee2c 100755
--- a/provisioners/install-nix-packages-flakes.sh
+++ b/provisioners/install-nix-packages-flakes.sh
@@ -36,7 +36,7 @@ cat << EOF > ~/.config/nixpkgs/flake.nix
   description = "A declarative system installation";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.11"; # also possible: `nixos-unstable`
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05"; # also possible: `nixos-unstable`
   };
 
   outputs = { self, nixpkgs }: