diff --git a/pyproject.toml b/pyproject.toml
index 7ecbbe5f4f..93c1e68ee0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,7 @@ select = [
   "F",  # pyflakes
   "I",  # isort
   "YTT",  # flake8-2020
+  "PT",  # flake8-pytest-style
 ]
 extend-ignore = [
     'F403',  # undefined-local-with-import-star
@@ -54,6 +55,9 @@ extend-exclude = [
 [tool.ruff.isort]
 combine-as-imports = true
 
+[tool.ruff.flake8-pytest-style]
+fixture-parentheses = false
+
 [tool.mypy]
 python_version = "3.8"
 
diff --git a/trio/_tests/test_exports.py b/trio/_tests/test_exports.py
index e756e8ad69..71c9ffb198 100644
--- a/trio/_tests/test_exports.py
+++ b/trio/_tests/test_exports.py
@@ -113,7 +113,7 @@ def iter_modules(
 # they might be using a newer version of Python with additional symbols which
 # won't be reflected in trio.socket, and this shouldn't cause downstream test
 # runs to start failing.
-@pytest.mark.redistributors_should_skip
+@pytest.mark.redistributors_should_skip()
 # Static analysis tools often have trouble with alpha releases, where Python's
 # internals are in flux, grammar may not have settled down, etc.
 @pytest.mark.skipif(
@@ -263,7 +263,7 @@ def no_underscores(symbols):
 # modules, instead of once per class.
 @slow
 # see comment on test_static_tool_sees_all_symbols
-@pytest.mark.redistributors_should_skip
+@pytest.mark.redistributors_should_skip()
 # Static analysis tools often have trouble with alpha releases, where Python's
 # internals are in flux, grammar may not have settled down, etc.
 @pytest.mark.skipif(