diff --git a/src/conftest.py b/src/conftest.py
index a8fc6aa65..187ca5982 100644
--- a/src/conftest.py
+++ b/src/conftest.py
@@ -31,6 +31,18 @@ def faker_session_locale() -> str:
     return "en_US"
 
 
+@pytest.fixture(autouse=True)
+def _fast_password_hasher(settings: Settings) -> None:
+    """Hash test passwords with MD5 instead of Django's default PBKDF2.
+
+    PBKDF2 is deliberately slow, and every ``admin_user`` or
+    ``create_superuser`` call pays for it: about 600 ms each. No test depends
+    on the hash format, only on ``check_password`` and on the stored value
+    changing when the password does.
+    """
+    settings.PASSWORD_HASHERS = ["django.contrib.auth.hashers.MD5PasswordHasher"]
+
+
 @pytest.fixture(autouse=True)
 def _clear_content_type_caches() -> None:
     """Clear Django's ContentType cache and guardian's lru_cache before each test.
diff --git a/src/documents/tests/search/test_documented_syntax.py b/src/documents/tests/search/test_documented_syntax.py
index 55d446e20..fbfdddfac 100644
--- a/src/documents/tests/search/test_documented_syntax.py
+++ b/src/documents/tests/search/test_documented_syntax.py
@@ -269,7 +269,7 @@ class TestDocumentedDateForms:
             yield
 
     @pytest.fixture
-    def dated(self, index_document: Callable[..., Document]) -> dict[str, int]:
+    def dated(self, backend: TantivyBackend) -> dict[str, int]:
         stamps = {
             "today": datetime(2026, 6, 15, 9, 0, tzinfo=UTC),
             "yesterday": datetime(2026, 6, 14, 9, 0, tzinfo=UTC),
@@ -279,14 +279,14 @@ class TestDocumentedDateForms:
             "january": datetime(2026, 1, 10, 10, 0, tzinfo=UTC),
             "old": datetime(2005, 3, 4, 15, 30, tzinfo=UTC),
         }
-        return {
-            label: index_document(
-                title=label,
-                content="dated body",
-                added=stamp,
-            ).pk
+        docs = {
+            label: DocumentFactory(title=label, content="dated body", added=stamp)
             for label, stamp in stamps.items()
         }
+        with backend.batch_update() as batch:
+            for doc in docs.values():
+                batch.add_or_update(doc)
+        return {label: doc.pk for label, doc in docs.items()}
 
     @pytest.mark.parametrize(
         ("query", "label"),
diff --git a/src/documents/tests/test_workflows.py b/src/documents/tests/test_workflows.py
index b20e81880..7364ec8c2 100644
--- a/src/documents/tests/test_workflows.py
+++ b/src/documents/tests/test_workflows.py
@@ -4192,7 +4192,11 @@ class TestWorkflows(
             expected_str = "Error occurred sending webhook"
             self.assertIn(expected_str, cm.output[0])
 
-    def test_workflow_webhook_action_url_invalid_params_headers(self) -> None:
+    @mock.patch("documents.workflows.webhooks.send_webhook.apply_async")
+    def test_workflow_webhook_action_url_invalid_params_headers(
+        self,
+        mock_post,
+    ) -> None:
         """
         GIVEN:
             - Document updated workflow with webhook action
@@ -4201,6 +4205,7 @@ class TestWorkflows(
             - Document that matches is updated
         THEN:
             - Error is logged
+            - The webhook is still queued, with empty data and headers
         """
         trigger = WorkflowTrigger.objects.create(
             type=WorkflowTrigger.WorkflowTriggerType.DOCUMENT_UPDATED,
@@ -4237,6 +4242,11 @@ class TestWorkflows(
             expected_str = "Error occurred parsing webhook headers"
             self.assertIn(expected_str, cm.output[1])
 
+        mock_post.assert_called_once()
+        kwargs = mock_post.call_args.kwargs["kwargs"]
+        self.assertEqual(kwargs["data"], {})
+        self.assertEqual(kwargs["headers"], {})
+
     @mock.patch("httpx.Client.post")
     def test_workflow_webhook_send_webhook_task(self, mock_post) -> None:
         mock_post.return_value = mock.Mock(