diff --git a/CHANGES.md b/CHANGES.md
index 9ecfcd0..b0a5fef 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -8,6 +8,7 @@ releases are available on [PyPI](https://pypi.org/project/pytask-parallel) and
 ## 0.3.1 - 2023-xx-xx
 
 - {pull}`56` refactors the `ProcessPoolExecutor`.
+- {pull}`57` does some housekeeping.
 
 ## 0.3.0 - 2023-01-23
 
diff --git a/pyproject.toml b/pyproject.toml
index 0819456..24f0479 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,3 +65,15 @@ extend-ignore = [
 
 [tool.ruff.pydocstyle]
 convention = "numpy"
+
+
+[tool.pytest.ini_options]
+# Do not add src since it messes with the loading of pytask-parallel as a plugin.
+testpaths = ["test"]
+markers = [
+    "wip: Tests that are work-in-progress.",
+    "unit: Flag for unit tests which target mainly a single function.",
+    "integration: Flag for integration tests which may comprise of multiple unit tests.",
+    "end_to_end: Flag for tests that cover the whole program.",
+]
+norecursedirs = [".idea", ".tox"]
diff --git a/src/pytask_parallel/execute.py b/src/pytask_parallel/execute.py
index 8f72785..f3178a0 100644
--- a/src/pytask_parallel/execute.py
+++ b/src/pytask_parallel/execute.py
@@ -154,14 +154,10 @@ def pytask_execute_build(session: Session) -> bool | None:  # noqa: C901, PLR091
 
 
 def _parse_future_exception(
-    exception: BaseException | None,
+    exc: BaseException | None,
 ) -> tuple[type[BaseException], BaseException, TracebackType] | None:
-    """Parse a future exception."""
-    return (
-        None
-        if exception is None
-        else (type(exception), exception, exception.__traceback__)
-    )
+    """Parse a future exception into the format of ``sys.exc_info``."""
+    return None if exc is None else (type(exc), exc, exc.__traceback__)
 
 
 class ProcessesNameSpace:
diff --git a/tox.ini b/tox.ini
index 8ac41cc..e83a36d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,34 +18,3 @@ conda_channels =
 commands =
     pip install --no-deps -e .
     pytest {posargs}
-
-[flake8]
-docstring-convention = numpy
-ignore =
-    D
-    E203  ; ignores whitespace around : which is enforced by Black.
-    W503  ; ignores linebreak before binary operator which is enforced by Black.
-    PT006 ; ignores that parametrizing tests with tuple argument names is preferred.
-max-line-length = 88
-pytest-mark-no-parentheses = true
-warn-symbols =
-    pytest.mark.wip = Remove 'wip' mark for tests.
-    pytest.mark.skip = Remove 'skip' flag for tests.
-
-[pytest]
-testpaths =
-    # Do not add src since it messes with the loading of pytask-parallel as a plugin.
-    tests
-addopts = --doctest-modules
-filterwarnings =
-    ignore: the imp module is deprecated in favour of importlib
-    ignore: The (symbol|parser) module is deprecated and will be removed in future
-    ignore: Using or importing the ABCs from 'collections' instead of from
-markers =
-    wip: Tests that are work-in-progress.
-    unit: Flag for unit tests which target mainly a single function.
-    integration: Flag for integration tests which may comprise of multiple unit tests.
-    end_to_end: Flag for tests that cover the whole program.
-norecursedirs =
-    .idea
-    .tox