diff --git a/pyproject.toml b/pyproject.toml
index ee434fcb..c8faf744 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -122,9 +122,15 @@ ignore = [
 external = ["RMP001", "RMP002"]
 
 [tool.ruff.lint.per-file-ignores]
+"rampart/pytest_plugin/plugin.py" = [
+  "unused-noqa", # Ruff 0.16.4 does not recognize pytest-fixture-autouse.
+]
 "scripts/hatch_build.py" = [
   "implicit-namespace-package", # Top-level build hook
 ]
+"tests/integration/conftest.py" = [
+  "unused-noqa", # Ruff 0.16.4 does not recognize pytest-fixture-autouse.
+]
 "tools/flake8_rampart.py" = [
   "implicit-namespace-package", # flake8 imports it as a top-level module
 ]
diff --git a/rampart/pytest_plugin/plugin.py b/rampart/pytest_plugin/plugin.py
index f6dbcea5..e76bf01e 100644
--- a/rampart/pytest_plugin/plugin.py
+++ b/rampart/pytest_plugin/plugin.py
@@ -270,7 +270,7 @@ def trial_config(request: pytest.FixtureRequest) -> TrialConfig:
     )
 
 
-@pytest.fixture(autouse=True)
+@pytest.fixture(autouse=True)  # ruff: ignore[pytest-fixture-autouse, unused-noqa]
 def _rampart_collect(  # pytest discovers this via autouse=True
     request: pytest.FixtureRequest,
 ) -> Generator[None, None, None]:
diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py
index 50874d06..3f51b78e 100644
--- a/tests/integration/conftest.py
+++ b/tests/integration/conftest.py
@@ -45,7 +45,7 @@
 _KEY_VAR = "RAMPART_TEST_OPENAI_KEY"
 
 
-@pytest_asyncio.fixture(scope="session", autouse=True)
+@pytest_asyncio.fixture(scope="session", autouse=True)  # ruff: ignore[pytest-fixture-autouse, unused-noqa]
 async def pyrit_session_async() -> None:
     """Initialize PyRIT in-memory once per session (autouse).