diff --git a/pkgs/by-name/je/jextract-21/package.nix b/pkgs/by-name/je/jextract-21/package.nix
deleted file mode 100644
index ee87170a7011..000000000000
--- a/pkgs/by-name/je/jextract-21/package.nix
+++ /dev/null
@@ -1,54 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  makeBinaryWrapper,
-  gradle,
-  jdk21,
-  llvmPackages,
-}:
-
-stdenv.mkDerivation {
-  pname = "jextract";
-  version = "unstable-2023-11-27";
-
-  src = fetchFromGitHub {
-    owner = "openjdk";
-    repo = "jextract";
-    rev = "8730fcf05c229d035b0db52ee6bd82622e9d03e9"; # Update jextract 21 with latest fixes
-    hash = "sha256-Wct/yx5C0EjDtDyXNYDH5LRmrfq7islXbPVIGBR6x5Y=";
-  };
-
-  nativeBuildInputs = [
-    gradle
-    makeBinaryWrapper
-  ];
-
-  gradleFlags = [
-    "-Pllvm_home=${lib.getLib llvmPackages.libclang}"
-    "-Pjdk21_home=${jdk21}"
-  ];
-
-  doCheck = true;
-
-  gradleCheckTask = "verify";
-
-  installPhase = ''
-    runHook preInstall
-
-    mkdir -p $out/opt/
-    cp -r ./build/jextract $out/opt/jextract
-    makeBinaryWrapper "$out/opt/jextract/bin/jextract" "$out/bin/jextract"
-
-    runHook postInstall
-  '';
-
-  meta = {
-    description = "Tool which mechanically generates Java bindings from a native library headers";
-    mainProgram = "jextract";
-    homepage = "https://github.com/openjdk/jextract";
-    platforms = jdk21.meta.platforms;
-    license = lib.licenses.gpl2Only;
-    maintainers = with lib.maintainers; [ sharzy ];
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 2d5b5d4f7140..6d6659140d42 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1021,6 +1021,7 @@ mapAliases {
   jellyfin-media-player = jellyfin-desktop; # Added 2025-12-14
   jellyseerr = warnAlias "'jellyseerr' has been renamed to 'seerr'" seerr; # Added 2026-03-17
   jesec-rtorrent = throw "'jesec-rtorrent' has been removed due to lack of maintenance upstream."; # Added 2025-11-20
+  jextract-21 = throw "'jextract-21' has been removed due to lack of maintenance upstream. Please use 'jextract'"; # Added 2026-05-13
   jhentai = throw "'jhentai' has been removed, as it is unmaintained"; # Added 2026-01-25
   jikespg = throw "'jikespg' has been removed due to lack of maintenance upstream."; # Added 2025-06-10
   jing = jing-trang; # Added 2025-09-18