`nix flake update` fails with HTTP error 429

Hi, I have an issue, that Github responds with an HTTP error 429, while downloading the nixpkgs archive: johannes@johannes-pc:~/src/nixos-configuration]$ nix flake update warning: unable to download 'https://github.com/NixOS/nixpkgs/archive/e5bdc4a41d4c072fe1e3787eaa0320a384741d44.tar.gz': HTTP error 429 response body: 429: Too Many Requests For more on scraping GitHub and how it may affect your rights, please review our Terms of Service (https://docs.github.com/en/site-policy/github-terms/g...