diff --git a/pylint_pytest/checkers/class_attr_loader.py b/pylint_pytest/checkers/class_attr_loader.py
index 40d16cf..fdd8339 100644
--- a/pylint_pytest/checkers/class_attr_loader.py
+++ b/pylint_pytest/checkers/class_attr_loader.py
@@ -1,4 +1,4 @@
-from typing import Optional, Set
+from __future__ import annotations
 
 from astroid import Assign, Attribute, ClassDef, Name
 
@@ -10,8 +10,8 @@ class ClassAttrLoader(BasePytestChecker):
     msgs = {"E6400": ("", "pytest-class-attr-loader", "")}
 
     in_setup = False
-    request_cls: Set[str] = set()
-    class_node: Optional[ClassDef] = None
+    request_cls: set[str] = set()
+    class_node: ClassDef | None = None
 
     def visit_functiondef(self, node):
         """determine if a method is a class setup method"""
diff --git a/pylint_pytest/checkers/fixture.py b/pylint_pytest/checkers/fixture.py
index 86dd5bb..5b13360 100644
--- a/pylint_pytest/checkers/fixture.py
+++ b/pylint_pytest/checkers/fixture.py
@@ -1,8 +1,9 @@
+from __future__ import annotations
+
 import fnmatch
 import io
 import sys
 from pathlib import Path
-from typing import Set, Tuple
 
 import astroid
 import pytest
@@ -19,7 +20,7 @@
 from .types import FixtureDict, replacement_add_message
 
 # TODO: support pytest python_files configuration
-FILE_NAME_PATTERNS: Tuple[str, ...] = ("test_*.py", "*_test.py")
+FILE_NAME_PATTERNS: tuple[str, ...] = ("test_*.py", "*_test.py")
 ARGUMENT_ARE_KEYWORD_ONLY = (
     "https://docs.pytest.org/en/stable/deprecations.html#pytest-fixture-arguments-are-keyword-only"
 )
@@ -28,7 +29,7 @@
 class FixtureCollector:
     # Same as ``_pytest.fixtures.FixtureManager._arg2fixturedefs``.
     fixtures: FixtureDict = {}
-    errors: Set[pytest.CollectReport] = set()
+    errors: set[pytest.CollectReport] = set()
 
     def pytest_sessionfinish(self, session):
         # pylint: disable=protected-access
@@ -76,9 +77,9 @@ class FixtureChecker(BasePytestChecker):
     # Store all fixtures discovered by pytest session
     _pytest_fixtures: FixtureDict = {}
     # Stores all used function arguments
-    _invoked_with_func_args: Set[str] = set()
+    _invoked_with_func_args: set[str] = set()
     # Stores all invoked fixtures through @pytest.mark.usefixture(...)
-    _invoked_with_usefixtures: Set[str] = set()
+    _invoked_with_usefixtures: set[str] = set()
     _original_add_message = replacement_add_message
 
     def open(self):
diff --git a/pylint_pytest/checkers/types.py b/pylint_pytest/checkers/types.py
index c4c43e8..7fd5708 100644
--- a/pylint_pytest/checkers/types.py
+++ b/pylint_pytest/checkers/types.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import sys
 from pprint import pprint
 from typing import Any, Dict, List
diff --git a/tests/base_tester.py b/tests/base_tester.py
index c57971e..c775502 100644
--- a/tests/base_tester.py
+++ b/tests/base_tester.py
@@ -1,9 +1,10 @@
+from __future__ import annotations
+
 import os
 import sys
 from abc import ABC
 from pathlib import Path
 from pprint import pprint
-from typing import List, Type
 
 import astroid
 from pylint.checkers import BaseChecker
@@ -23,9 +24,9 @@ def get_test_root_path() -> Path:
 
 class BasePytestTester(ABC):
     CHECKER_CLASS = BaseChecker
-    IMPACTED_CHECKER_CLASSES: List[Type[BaseChecker]] = []
+    IMPACTED_CHECKER_CLASSES: list[BaseChecker] = []
     MSG_ID: str
-    msgs: List[MessageTest] = []
+    msgs: list[MessageTest] = []
 
     def __init_subclass__(cls, **kwargs):
         super().__init_subclass__(**kwargs)
diff --git a/tests/base_tester_test.py b/tests/base_tester_test.py
index b40d510..89c714c 100644
--- a/tests/base_tester_test.py
+++ b/tests/base_tester_test.py
@@ -25,7 +25,7 @@ class NoMsgIDSubclass(BasePytestTester):
             pass
 
 
-@pytest.mark.parametrize("msg_id", [123, None, ""], ids=lambda x: f"msg_id={x}")
+@pytest.mark.parametrize("msg_id", [123, None, ""], ids=lambda msg_id: f"{msg_id=}")
 def test_init_subclass_invalid_msg_id_type(msg_id):
     with pytest.raises(TypeError):