diff --git a/pkgs/development/python-modules/dask-yarn/default.nix b/pkgs/development/python-modules/dask-yarn/default.nix
deleted file mode 100644
index c0a21e97a5e6..000000000000
--- a/pkgs/development/python-modules/dask-yarn/default.nix
+++ /dev/null
@@ -1,84 +0,0 @@
-{
-  lib,
-  buildPythonPackage,
-  fetchFromGitHub,
-  fetchpatch,
-  setuptools,
-  versioneer,
-  dask,
-  distributed,
-  grpcio,
-  skein,
-  pytestCheckHook,
-}:
-
-buildPythonPackage rec {
-  pname = "dask-yarn";
-  version = "0.9";
-  pyproject = true;
-
-  src = fetchFromGitHub {
-    owner = "dask";
-    repo = "dask-yarn";
-    tag = version;
-    hash = "sha256-/BTsxQSiVQrihrCa9DE7pueyg3aPAdjd/Dt4dpUwdtM=";
-  };
-
-  patches = [
-    (fetchpatch {
-      # https://github.com/dask/dask-yarn/pull/150
-      name = "address-deprecations-introduced-in-distributed-2021-07-0";
-      url = "https://github.com/dask/dask-yarn/pull/150/commits/459848afcdc22568905ee98622c74e4071496423.patch";
-      hash = "sha256-LS46QBdiAmsp4jQq4DdYdmmk1qzx5JZNTQUlRcRwY5k=";
-    })
-  ];
-
-  postPatch = ''
-    rm versioneer.py
-  '';
-
-  build-system = [
-    setuptools
-    versioneer
-  ];
-
-  dependencies = [
-    dask
-    distributed
-    grpcio
-    skein
-  ];
-
-  nativeCheckInputs = [ pytestCheckHook ];
-
-  preCheck = ''
-    export HOME=$TMPDIR
-  '';
-
-  pythonImportsCheck = [ "dask_yarn" ];
-
-  disabledTests = [
-    # skein.exceptions.DriverError: Failed to start java process
-    "test_basic"
-    "test_adapt"
-    "test_from_specification"
-    "test_from_application_id"
-    "test_from_current"
-    "test_basic_async"
-    "test_widget_and_html_reprs"
-  ];
-
-  meta = {
-    description = "Deploy dask on YARN clusters";
-    mainProgram = "dask-yarn";
-    longDescription = ''
-      Dask-Yarn deploys Dask on YARN clusters,
-            such as are found in traditional Hadoop installations.
-            Dask-Yarn provides an easy interface to quickly start,
-            stop, and scale Dask clusters natively from Python.
-    '';
-    homepage = "https://yarn.dask.org/";
-    license = lib.licenses.bsd3;
-    maintainers = with lib.maintainers; [ illustris ];
-  };
-}
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index 818cd202a9c9..a8ec130f5be2 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -150,6 +150,7 @@ mapAliases {
   cx_Freeze = throw "'cx_Freeze' has been renamed to/replaced by 'cx-freeze'"; # Converted to throw 2025-10-29
   cx_oracle = throw "'cx_oracle' has been renamed to/replaced by 'cx-oracle'"; # Converted to throw 2025-10-29
   dalle-mini = throw "'dalle-mini' has been removed due to lack of upstream maintenance"; # added 2026-02-26
+  dask-yarn = throw "'dask-yarn' has been removed due to lack of upstream maintenance"; # added 2026-07-06
   datashape = throw "'datashape' has been removed as it was unmaintained upstream"; # Added 2026-03-22
   datatable = throw "'datatable' has been removed due to lack of upstream maintenance"; # added 2026-02-02
   dateutil = throw "'dateutil' has been renamed to/replaced by 'python-dateutil'"; # Converted to throw 2025-10-29
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index dac84bd97981..b2b7df6989b7 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3963,8 +3963,6 @@ self: super: with self; {
 
   dask-mpi = callPackage ../development/python-modules/dask-mpi { };
 
-  dask-yarn = callPackage ../development/python-modules/dask-yarn { };
-
   data-grand-lyon-ha = callPackage ../development/python-modules/data-grand-lyon-ha { };
 
   databackend = callPackage ../development/python-modules/databackend { };