diff --git a/pkgs/tools/networking/openapi-generator-cli/unstable.nix b/pkgs/tools/networking/openapi-generator-cli/unstable.nix
deleted file mode 100644
index 9af28b3e09ea..000000000000
--- a/pkgs/tools/networking/openapi-generator-cli/unstable.nix
+++ /dev/null
@@ -1,42 +0,0 @@
-{ callPackage, lib, stdenv, fetchurl, jre, makeWrapper }:
-
-let this = stdenv.mkDerivation rec {
-  version = "6.0.0-2022-03-18";  # Also update the fetchurl link
-  pname = "openapi-generator-cli";
-
-  jarfilename = "${pname}-${version}.jar";
-
-  nativeBuildInputs = [
-    makeWrapper
-  ];
-
-  src = fetchurl {
-    url = "https://oss.sonatype.org/content/repositories/snapshots/org/openapitools/openapi-generator-cli/6.0.0-SNAPSHOT/openapi-generator-cli-6.0.0-20220318.042704-93.jar";
-    sha256 = "1h126kpbnpbrsnjrxb09hzb796dwl4g58d6wrh1hhv8svwy5p0bl";
-  };
-
-  dontUnpack = true;
-
-  installPhase = ''
-    runHook preInstall
-
-    install -D "$src" "$out/share/java/${jarfilename}"
-
-    makeWrapper ${jre}/bin/java $out/bin/${pname} \
-      --add-flags "-jar $out/share/java/${jarfilename}"
-
-    runHook postInstall
-  '';
-
-  meta = with lib; {
-    description = "Allows generation of API client libraries (SDK generation), server stubs and documentation automatically given an OpenAPI Spec";
-    homepage = "https://github.com/OpenAPITools/openapi-generator";
-    license = licenses.asl20;
-    maintainers = [ maintainers.shou ];
-  };
-
-  passthru.tests.example = callPackage ./example.nix {
-    openapi-generator-cli = this;
-  };
-};
-in this
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 79c739e47f89..53478e4a968f 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -719,6 +719,7 @@ mapAliases ({
   opa = throw "opa has been removed from nixpkgs as upstream has abandoned the project"; # Added 2023-03-21
   opam_1_2 = throw "'opam_1_2' has been renamed to/replaced by 'opam'"; # Added 2023-03-08
   openafs_1_8 = openafs; # Added 2022-08-22
+  openapi-generator-cli-unstable = throw "openapi-generator-cli-unstable was removed as it was not being updated; consider openapi-generator-cli instead"; # Added 2024-01-02
   openbangla-keyboard = throw "openbangla-keyboard has been replaced by ibus-engines.openbangla-keyboard and fcitx5-openbangla-keyboard"; # added 2023-10-10
   opencascade = throw "'opencascade' has been removed as it is unmaintained; consider opencascade-occt instead'"; # Added 2023-09-18
   openconnect_head = openconnect_unstable; # Added 2022-03-29
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index bf3fa81e5e9f..a7a4474b608f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -11560,7 +11560,6 @@ with pkgs;
   ooniprobe-cli = callPackage ../tools/networking/ooniprobe-cli { };
 
   openapi-generator-cli = callPackage ../tools/networking/openapi-generator-cli { jre = pkgs.jre_headless; };
-  openapi-generator-cli-unstable = callPackage ../tools/networking/openapi-generator-cli/unstable.nix { jre = pkgs.jre_headless; };
 
   openboard = libsForQt5.callPackage ../applications/graphics/openboard { };