diff --git a/pyproject.toml b/pyproject.toml
index f6b496848..62c17cbe0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -160,6 +160,7 @@ markers = [
     "isolated: Needs an isolated virtualenv",
     "network: Needs a network connection to setup or run",
     "setuptools: Tests setuptools integration",
+    "upstream: Intended to check our own development",
     "virtualenv: Needs a virtualenv",
 ]
 norecursedirs = ["tests/packages/**"]
diff --git a/tests/test_schema.py b/tests/test_schema.py
index e68c9decc..914f357c2 100644
--- a/tests/test_schema.py
+++ b/tests/test_schema.py
@@ -13,6 +13,8 @@
 
 DIR = Path(__file__).parent.resolve()
 
+pytestmark = pytest.mark.upstream
+
 
 def test_compare_schemas():
     """
@@ -28,7 +30,9 @@ def test_compare_schemas():
 ]
 
 
-@pytest.mark.parametrize("filepath", SCHEMAS)
+@pytest.mark.parametrize(
+    "filepath", SCHEMAS, ids=lambda x: str(x.relative_to(DIR.parent).parent)
+)
 def test_valid_schemas_files(filepath: Path) -> None:
     api = pytest.importorskip("validate_pyproject.api")
 
diff --git a/tests/test_simplest_c.py b/tests/test_simplest_c.py
index 328147e82..d18651143 100644
--- a/tests/test_simplest_c.py
+++ b/tests/test_simplest_c.py
@@ -45,7 +45,12 @@ def test_pep517_sdist(tmp_path, monkeypatch):
 @pytest.mark.compile
 @pytest.mark.configure
 @pytest.mark.parametrize(
-    "component", [[], ["PythonModule"], ["PythonModule", "Generated"]]
+    "component",
+    [
+        pytest.param([], id="all"),
+        pytest.param(["PythonModule"], id="one"),
+        pytest.param(["PythonModule", "Generated"], id="two"),
+    ],
 )
 def test_pep517_wheel(tmp_path, monkeypatch, virtualenv, component):
     dist = tmp_path / "dist"