diff --git a/pkgs/applications/networking/instant-messengers/sky/default.nix b/pkgs/applications/networking/instant-messengers/sky/default.nix
deleted file mode 100644
index e949625875e5..000000000000
--- a/pkgs/applications/networking/instant-messengers/sky/default.nix
+++ /dev/null
@@ -1,67 +0,0 @@
-{ lib
-, mkDerivation
-, fetchurl
-, autoPatchelfHook
-, zstd
-, curl
-, ffmpeg
-, libjpeg_turbo
-, libpam-wrapper
-, libv4l
-, pulseaudio
-, zlib
-, xorg
-}:
-
-mkDerivation rec {
-  pname = "sky";
-  version = "2.1.7801";
-
-  src = fetchurl {
-    url = "https://tel.red/repos/archlinux/sky-archlinux-${version}-1-x86_64.pkg.tar.zst";
-    sha256 = "sha256-3xiq2b3CwNjRd09q0z8olrmLGhgkJGAVkZoJSIHom+k=";
-  };
-
-  nativeBuildInputs = [ autoPatchelfHook zstd ];
-
-  buildInputs = [
-    curl
-    ffmpeg
-    libjpeg_turbo
-    libpam-wrapper
-    libv4l
-    pulseaudio
-    xorg.libX11
-    xorg.libXScrnSaver
-    xorg.libXcursor
-    xorg.libXdamage
-    xorg.libXinerama
-    xorg.libXmu
-    xorg.libXrandr
-    xorg.libXtst
-    xorg.libXv
-    xorg.libxkbfile
-    zlib
-  ];
-
-  installPhase = ''
-    runHook preInstall
-
-    mkdir $out
-    mv * $out/
-    ln --force --symbolic $out/lib/sky/sky{,_sender} $out/bin
-    substituteInPlace $out/share/applications/sky.desktop \
-      --replace /usr/ $out/
-
-    runHook postInstall
-  '';
-
-  meta = {
-    description = "Lync & Skype for Business on Linux";
-    homepage = "https://tel.red/";
-    sourceProvenance = with lib.sourceTypes; [ binaryNativeCode ];
-    license = lib.licenses.unfree;
-    maintainers = [ lib.maintainers.wucke13 ];
-    platforms = [ "x86_64-linux" ];
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 1a5903a4d959..1844ca652f4a 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1294,6 +1294,7 @@ mapAliases ({
   shipyard = jumppad; # Added 2023-06-06
   signumone-ks = throw "signumone-ks has been removed from nixpkgs because the developers stopped offering the binaries"; # Added 2023-08-17
   simplenote = throw "'simplenote' has been removed because it is no longer maintained and insecure"; # Added 2023-10-09
+  sky = throw "'sky' has been removed because its upstream website disappeared"; # Added 2024-07-21
   SkypeExport = skypeexport; # Added 2024-06-12
   slack-dark = slack; # Added 2020-03-27
   slmenu = throw "slmenu has been removed (upstream is gone)"; # Added 2023-04-06
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index a2a18fff0194..9b517ca2551d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -33805,10 +33805,6 @@ with pkgs;
 
   sish = callPackage ../tools/networking/sish { };
 
-  sky = libsForQt5.callPackage ../applications/networking/instant-messengers/sky {
-    libjpeg_turbo = libjpeg8;
-  };
-
   slingshot = callPackage ../tools/misc/slingshot { };
 
   slop = callPackage ../tools/misc/slop { };