diff --git a/pkgs/development/python-modules/dask-glm/default.nix b/pkgs/development/python-modules/dask-glm/default.nix
index 3801ae817917..9c4045be8fc4 100644
--- a/pkgs/development/python-modules/dask-glm/default.nix
+++ b/pkgs/development/python-modules/dask-glm/default.nix
@@ -1,50 +1,60 @@
 {
   lib,
-  stdenv,
   buildPythonPackage,
   fetchFromGitHub,
 
   # build-system
+  setuptools,
   setuptools-scm,
 
   # dependencies
   cloudpickle,
+  dask,
   distributed,
   multipledispatch,
+  numba,
+  numpy,
   scikit-learn,
   scipy,
   sparse,
-  dask,
 
   # tests
   pytest-xdist,
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "dask-glm";
-  version = "0.3.2";
+  version = "0.4.0";
   pyproject = true;
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "dask";
     repo = "dask-glm";
-    tag = version;
-    hash = "sha256-q98QMmw1toashimS16of54cgZgIPqkua3xGD1FZ1nTc=";
+    tag = finalAttrs.version;
+    hash = "sha256-u3KASmBamc7qU/GxGT0QBqWJ1HDk81xI0MOoRng8BzA=";
   };
 
-  # ValueError: The truth value of an empty array is ambiguous. Use `array.size > 0` to check that an array is not empty.
+  # The iprint parameter of `scipy.optimize.fmin_l_bfgs_b` was removed in 1.18.0
+  # https://github.com/scipy/scipy/blob/b881cb179463e85a74f3368f6242986d713adbdc/doc/source/release/1.18.0-notes.rst?plain=1#L291-L292
   postPatch = ''
-    substituteInPlace dask_glm/utils.py \
-      --replace-fail "if arr:" "if (arr is not None) and (arr.size > 0):"
+    substituteInPlace dask_glm/algorithms.py \
+      --replace-fail "iprint=(verbose > 0) - 1," ""
   '';
 
-  build-system = [ setuptools-scm ];
+  build-system = [
+    setuptools
+    setuptools-scm
+  ];
 
   dependencies = [
     cloudpickle
+    dask
     distributed
     multipledispatch
+    numba
+    numpy
     scikit-learn
     scipy
     sparse
@@ -58,23 +68,11 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "dask_glm" ];
 
-  disabledTests = [
-    # ValueError: <class 'bool'> can be computed for one-element arrays only.
-    "test_dot_with_sparse"
-
-    # ValueError: `shape` was not provided.
-    "test_sparse"
-  ];
-
-  # On darwin, tests saturate the entire system, even when constrained to run single-threaded
-  # Removing pytest-xdist AND setting --cores to one does not prevent the load from exploding
-  doCheck = !stdenv.hostPlatform.isDarwin;
-
   meta = {
     description = "Generalized Linear Models with Dask";
     homepage = "https://github.com/dask/dask-glm/";
-    changelog = "https://github.com/dask/dask-glm/releases/tag/${version}";
+    changelog = "https://github.com/dask/dask-glm/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.bsd3;
     maintainers = with lib.maintainers; [ GaetanLepage ];
   };
-}
+})
diff --git a/pkgs/development/python-modules/dask-ml/default.nix b/pkgs/development/python-modules/dask-ml/default.nix
index 4153970a052e..842cbad62466 100644
--- a/pkgs/development/python-modules/dask-ml/default.nix
+++ b/pkgs/development/python-modules/dask-ml/default.nix
@@ -24,22 +24,24 @@
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "dask-ml";
   version = "2025.1.0";
   pyproject = true;
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "dask";
     repo = "dask-ml";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-DHxx0LFuJmGWYuG/WGHj+a5XHAEekBmlHUUb90rl2IY=";
   };
 
   postPatch = ''
     substituteInPlace pyproject.toml \
-      --replace-fail 'addopts = "-rsx -v --durations=10 --color=yes"' \
-                     'addopts = ["-rsx", "-v", "--durations=10", "--color=yes"]'
+      --replace-fail \
+        'addopts = "-rsx -v --durations=10 --color=yes"' \
+        'addopts = ["-rsx", "-v", "--durations=10", "--color=yes"]'
   '';
 
   build-system = [
@@ -73,6 +75,18 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  pytestFlags = [
+    # Skipping check check_array_api_input for KMeans because it raised SkipTest:
+    # SCIPY_ARRAY_API is not set: not checking array_api input
+    "-Wignore::sklearn.exceptions.SkipTestWarning"
+
+    # pandas.errors.Pandas4Warning: For backward compatibility, 'str' dtypes are included by select_dtypes when 'object' dtype is specified.
+    # This behavior is deprecated and will be removed in a future version.
+    # Explicitly pass 'str' to `include` to select them, or to `exclude` to remove them and silence this warning.
+    # See https://pandas.pydata.org/docs/user_guide/migration-3-strings.html#string-migration-select-dtypes for details on how to write code that works with pandas 2 and 3.
+    "-Wignore::pandas.errors.Pandas4Warning"
+  ];
+
   disabledTestPaths = [
     # RuntimeError: Attempting to use an asynchronous Client in a synchronous context of `dask.compute`
     # https://github.com/dask/dask-ml/issues/1016
@@ -131,4 +145,4 @@ buildPythonPackage rec {
     license = lib.licenses.bsd3;
     maintainers = with lib.maintainers; [ GaetanLepage ];
   };
-}
+})
diff --git a/pkgs/development/python-modules/dask/default.nix b/pkgs/development/python-modules/dask/default.nix
index 3c83bd0e6eda..691504cc6a98 100644
--- a/pkgs/development/python-modules/dask/default.nix
+++ b/pkgs/development/python-modules/dask/default.nix
@@ -44,7 +44,7 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "dask";
-  version = "2026.7.1";
+  version = "2026.8.0";
   pyproject = true;
   __structuredAttrs = true;
 
@@ -52,7 +52,7 @@ buildPythonPackage (finalAttrs: {
     owner = "dask";
     repo = "dask";
     tag = finalAttrs.version;
-    hash = "sha256-Hh3QMSLMn7xCbwoiu4gjjF590YXZfiG5rp20kWX+Kms=";
+    hash = "sha256-DFPd46cBirwztmZJvRKS8u5qvYMEIWfy90QR2AeBu3c=";
   };
 
   postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
diff --git a/pkgs/development/python-modules/distributed/default.nix b/pkgs/development/python-modules/distributed/default.nix
index 9f2fb7ebe6c3..a01910fa3853 100644
--- a/pkgs/development/python-modules/distributed/default.nix
+++ b/pkgs/development/python-modules/distributed/default.nix
@@ -26,7 +26,7 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "distributed";
-  version = "2026.7.1";
+  version = "2026.8.0";
   pyproject = true;
   __structuredAttrs = true;
 
@@ -34,7 +34,7 @@ buildPythonPackage (finalAttrs: {
     owner = "dask";
     repo = "distributed";
     tag = finalAttrs.version;
-    hash = "sha256-9QZb7PpPhdJEc4Kgoc3PE6TU7LHmiw58jkgfaoSNSg4=";
+    hash = "sha256-Z7T/ik8GDnFESDl2OuvSGFo+SBcEY7gpVx31CoTTvao=";
   };
 
   build-system = [