diff --git a/pkgs/development/python-modules/dateparser/default.nix b/pkgs/development/python-modules/dateparser/default.nix
index d5e665249869..92b2c9ef5be8 100644
--- a/pkgs/development/python-modules/dateparser/default.nix
+++ b/pkgs/development/python-modules/dateparser/default.nix
@@ -18,19 +18,20 @@
   parsel,
   requests,
   ruamel-yaml,
+  writableTmpDirAsHomeHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "dateparser";
-  version = "1.4.1";
+  version = "1.4.2";
 
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "scrapinghub";
     repo = "dateparser";
-    tag = "v${version}";
-    hash = "sha256-TA4GZb24++RF1sw4tECJF5UzouRCwwhPiim5z5/hMzU=";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-ulwX8yLLXm3V4eldiK+j0XWzgrPepeWiA3BAjDJv9iM=";
   };
 
   build-system = [ setuptools ];
@@ -61,12 +62,9 @@ buildPythonPackage rec {
     parsel
     requests
     ruamel-yaml
+    writableTmpDirAsHomeHook
   ]
-  ++ lib.concatAttrValues optional-dependencies;
-
-  preCheck = ''
-    export HOME="$TEMPDIR"
-  '';
+  ++ lib.concatAttrValues finalAttrs.passthru.optional-dependencies;
 
   # Upstream only runs the tests in tests/ in CI, others use git clone
   enabledTestPaths = [ "tests" ];
@@ -80,11 +78,11 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "dateparser" ];
 
   meta = {
-    changelog = "https://github.com/scrapinghub/dateparser/blob/${src.tag}/HISTORY.rst";
+    changelog = "https://github.com/scrapinghub/dateparser/blob/${finalAttrs.src.tag}/HISTORY.rst";
     description = "Date parsing library designed to parse dates from HTML pages";
     homepage = "https://github.com/scrapinghub/dateparser";
     license = lib.licenses.bsd3;
     mainProgram = "dateparser-download";
     maintainers = with lib.maintainers; [ dotlambda ];
   };
-}
+})
diff --git a/pkgs/development/python-modules/htmldate/default.nix b/pkgs/development/python-modules/htmldate/default.nix
index adb22cd753b2..805efeb1cd04 100644
--- a/pkgs/development/python-modules/htmldate/default.nix
+++ b/pkgs/development/python-modules/htmldate/default.nix
@@ -5,6 +5,7 @@
   dateparser,
   faust-cchardet,
   fetchFromGitHub,
+  fetchpatch,
   lxml,
   pytestCheckHook,
   python-dateutil,
@@ -24,6 +25,15 @@ buildPythonPackage rec {
     hash = "sha256-3qtksgzqcgWtUv81Aqeh0nTWYnH0PjPLG4NuYChbV0g=";
   };
 
+  patches = [
+    # https://github.com/adbar/htmldate/pull/199
+    (fetchpatch {
+      name = "fix-tests-with-dateparser-1.4.2.patch";
+      url = "https://github.com/adbar/htmldate/commit/14c70c4944f1a6950bedaf8b6e46b6ec726984b8.patch";
+      hash = "sha256-rtRUk9lGsNQyOZ5RAjvMP5JRa4WGWdo0Xzh0OvskYPs=";
+    })
+  ];
+
   build-system = [ setuptools ];
 
   dependencies = [