diff --git a/pyproject.toml b/pyproject.toml
index 10b6376f..a9944aea 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -67,6 +67,21 @@ omit = [
   "toolz/compatibility.py",
 ]
 
+[tool.pytest.ini_options]
+minversion = "6.0"
+testpaths = ["toolz"]
+xfail_strict = true
+addopts = [
+  "--strict-config",  # Force error if config is mispelled
+  "--strict-markers", # Force error if marker is mispelled (must be defined in config)
+  "-ra",              # Print summary of all fails/errors
+]
+log_cli_level = "info"
+filterwarnings = [
+  "error",
+  "ignore:The toolz.compatibility module is no longer needed:DeprecationWarning:",
+]
+
 [tool.coverage.report]
 exclude_lines = [
     "pragma: no cover",
diff --git a/toolz/sandbox/tests/test_parallel.py b/toolz/sandbox/tests/test_parallel.py
index 7a455937..1dae9383 100644
--- a/toolz/sandbox/tests/test_parallel.py
+++ b/toolz/sandbox/tests/test_parallel.py
@@ -11,7 +11,10 @@
 
 def test_fold():
     assert fold(add, range(10), 0) == reduce(add, range(10), 0)
-    assert fold(add, range(10), 0, map=Pool().map) == reduce(add, range(10), 0)
+
+    with Pool() as pool:
+        assert fold(add, range(10), 0, map=pool.map) == reduce(add, range(10), 0)
+
     assert fold(add, range(10), 0, chunksize=2) == reduce(add, range(10), 0)
     assert fold(add, range(10)) == fold(add, range(10), 0)