self: super: {
  youtube-dl = super.youtube-dl.overrideAttrs (oldAttrs: rec {
    version = "2021.04.07";
    src = super.fetchurl {
      url = "https://yt-dl.org/downloads/${version}/${oldAttrs.pname}-${version}.tar.gz";
      sha256 = "02d51l6gdjr3zhhi7ydf5kzv8dv4jzq0ygja7zb2h9k7hnl0l27m";
    };
  });
}