diff --git a/.pytest.toml b/.pytest.toml
new file mode 100644
index 00000000000..801cb596947
--- /dev/null
+++ b/.pytest.toml
@@ -0,0 +1,35 @@
+# https://docs.pytest.org/en/stable/reference/customize.html
+
+[pytest]
+minversion = "9.0"
+
+# https://docs.pytest.org/en/stable/reference/reference.html#command-line-flags
+addopts = [
+    # Show extra summary information for all non-passing tests
+    "-r a",
+    # https://docs.pytest.org/en/stable/explanation/pythonpath.html#import-modes
+    "--import-mode=importlib",
+    # https://pytest-cov.readthedocs.io/en/latest/config.html#reference
+    "--cov=check_peps",
+    "--cov=pep_sphinx_extensions",
+    "--cov-report=html",
+    "--cov-report=xml",
+]
+
+# Fail if pytest.mark.parametrize() has no parameters
+empty_parameter_set_mark = "fail_at_collect"
+
+filterwarnings = ["error"]
+
+testpaths = [
+    "pep_sphinx_extensions",
+]
+
+# https://docs.pytest.org/en/stable/reference/reference.html#confval-strict
+strict_config = true
+strict_markers = true
+strict_parametrization_ids = true
+strict_xfail = true
+
+# Various tests use Unicode in pytest.mark.parametrize().
+disable_test_id_escaping_and_forfeit_all_rights_to_community_support = true
diff --git a/pytest.ini b/pytest.ini
deleted file mode 100644
index 10404cc0b3b..00000000000
--- a/pytest.ini
+++ /dev/null
@@ -1,16 +0,0 @@
-[pytest]
-# https://docs.pytest.org/en/7.3.x/reference/reference.html#command-line-flags
-addopts =
-    -r a
-    --strict-config
-    --strict-markers
-    --import-mode=importlib
-    --cov check_peps --cov pep_sphinx_extensions
-    --cov-report html --cov-report xml
-empty_parameter_set_mark = fail_at_collect
-filterwarnings =
-    error
-minversion = 6.0
-testpaths = pep_sphinx_extensions
-xfail_strict = True
-disable_test_id_escaping_and_forfeit_all_rights_to_community_support = True
diff --git a/requirements.txt b/requirements.txt
index 07d631cee6f..945d29d4d46 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ docutils >= 0.19.0
 sphinx-notfound-page >= 1.0.2
 
 # For tests
-pytest
+pytest>=9
 pytest-cov
 
 # For python-releases.toml
diff --git a/tox.ini b/tox.ini
index c54968afebe..5427b2511e2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,3 +12,12 @@ pass_env =
     FORCE_COLOR
 commands =
     python -bb -X dev -W error -m pytest {posargs}
+
+[coverage:run]
+omit =
+    */__main__.py  # Ignore all __main__.py files
+    peps/*         # Ignore all files in the PEPs folder
+
+[coverage:report]
+exclude_also =
+    if __name__ == .__main__.: