diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 31d9bbb..0216782 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -95,7 +95,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
-        python -m pip install -c constraints.txt flake8 flake8-isort black mypy
+        python -m pip install -c constraints.txt black flake8 flake8-isort mypy pytest
         pip list
     - name: Run black
       run: |
diff --git a/constraints.txt b/constraints.txt
index f2e158e..3d61b2d 100644
--- a/constraints.txt
+++ b/constraints.txt
@@ -20,8 +20,12 @@ distlib==0.3.4
 docutils==0.18.1
 filelock==3.7.0
 flake8==4.0.1
-flake8-black==0.3.3
-flake8-isort==4.1.1
+flake8-bugbear==22.7.1
+flake8-comprehensions==3.10.0
+flake8-html==0.4.2
+flake8-logging-format==0.6.0
+flake8-mutable==1.2.0
+flake8-pyi==22.7.0
 fsfe-reuse==1.0.0
 idna==3.3
 iniconfig==1.1.1
@@ -31,7 +35,7 @@ jinja2==3.1.2
 license-expression==30.0.0
 markupsafe==2.1.1
 mccabe==0.6.1
-mypy==0.931
+mypy==0.971
 mypy-extensions==0.4.3
 packaging==21.3
 pathspec==0.9.0
@@ -42,8 +46,9 @@ pluggy==1.0.0
 py==1.11.0
 pycodestyle==2.8.0
 pyflakes==2.4.0
+pygments==2.12.0
 pyparsing==3.0.9
-pytest==7.0.1
+pytest==7.1.2
 pytest-cov==3.0.0
 pytest-html==3.1.1
 pytest-metadata==2.0.1
@@ -52,7 +57,6 @@ pytoml==0.1.21
 requests==2.27.1
 reuse==1.0.0
 six==1.16.0
-testfixtures==6.18.5
 toml==0.10.2
 tomli==2.0.1
 tox==3.25.0
diff --git a/mypy.ini b/mypy.ini
index 68e0846..a751daf 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -47,12 +47,3 @@ warn_return_any = True
 # Strict Optional checks.
 # If False, mypy treats None as compatible with every type. (default True)
 strict_optional = True
-
-[mypy-py.*]
-ignore_missing_imports = True
-
-[mypy-pytest]
-ignore_missing_imports = True
-
-[mypy-_pytest.*]
-ignore_missing_imports = True
diff --git a/requirements.in b/requirements.in
index 825ab6e..80f3df7 100644
--- a/requirements.in
+++ b/requirements.in
@@ -4,16 +4,21 @@ black<23
 bump2version
 coverage[toml]
 dflit
-flake8-black
-flake8-isort
+flake8-bugbear
+flake8-comprehensions
+flake8-html
+flake8-logging-format
+flake8-mutable
+flake8-pyi
 fsfe-reuse
 invoke
-mypy==0.931
+isort
+mypy==0.971
 pip-tools
 pip>=19.3
 pytest-cov
 pytest-html
-pytest~=7.0.1
+pytest~=7.1.2
 setuptools>=43
 tox-pyenv
 tox>=3.14.3
diff --git a/requirements.txt b/requirements.txt
index 323ecfc..bdc1812 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,13 +5,13 @@
 #    pip-compile --allow-unsafe --no-emit-index-url
 #
 attrs==21.4.0
-    # via pytest
+    # via
+    #   flake8-bugbear
+    #   pytest
 binaryornot==0.4.4
     # via reuse
 black==22.3.0
-    # via
-    #   -r requirements.in
-    #   flake8-black
+    # via -r requirements.in
 boolean-py==4.0
     # via
     #   license-expression
@@ -48,11 +48,22 @@ filelock==3.7.0
     #   virtualenv
 flake8==4.0.1
     # via
-    #   flake8-black
-    #   flake8-isort
-flake8-black==0.3.3
+    #   flake8-bugbear
+    #   flake8-comprehensions
+    #   flake8-html
+    #   flake8-mutable
+    #   flake8-pyi
+flake8-bugbear==22.7.1
+    # via -r requirements.in
+flake8-comprehensions==3.10.0
+    # via -r requirements.in
+flake8-html==0.4.2
     # via -r requirements.in
-flake8-isort==4.1.1
+flake8-logging-format==0.6.0
+    # via -r requirements.in
+flake8-mutable==1.2.0
+    # via -r requirements.in
+flake8-pyi==22.7.0
     # via -r requirements.in
 fsfe-reuse==1.0.0
     # via -r requirements.in
@@ -63,16 +74,18 @@ iniconfig==1.1.1
 invoke==1.7.1
     # via -r requirements.in
 isort==5.10.1
-    # via flake8-isort
+    # via -r requirements.in
 jinja2==3.1.2
-    # via reuse
+    # via
+    #   flake8-html
+    #   reuse
 license-expression==30.0.0
     # via reuse
 markupsafe==2.1.1
     # via jinja2
 mccabe==0.6.1
     # via flake8
-mypy==0.931
+mypy==0.971
     # via -r requirements.in
 mypy-extensions==0.4.3
     # via
@@ -103,10 +116,14 @@ py==1.11.0
 pycodestyle==2.8.0
     # via flake8
 pyflakes==2.4.0
-    # via flake8
+    # via
+    #   flake8
+    #   flake8-pyi
+pygments==2.12.0
+    # via flake8-html
 pyparsing==3.0.9
     # via packaging
-pytest==7.0.1
+pytest==7.1.2
     # via
     #   -r requirements.in
     #   pytest-cov
@@ -134,15 +151,12 @@ six==1.16.0
     # via
     #   tox
     #   virtualenv
-testfixtures==6.18.5
-    # via flake8-isort
 toml==0.10.2
     # via tox
 tomli==2.0.1
     # via
     #   black
     #   coverage
-    #   flake8-black
     #   mypy
     #   pep517
     #   pytest
diff --git a/src/pytest_mypy_testing/message.py b/src/pytest_mypy_testing/message.py
index 85ab4f5..2997ad7 100644
--- a/src/pytest_mypy_testing/message.py
+++ b/src/pytest_mypy_testing/message.py
@@ -5,8 +5,9 @@
 import dataclasses
 import enum
 import os
+import pathlib
 import re
-from typing import Optional, Tuple
+from typing import Optional, Tuple, Union
 
 
 __all__ = [
@@ -166,7 +167,9 @@ def __str__(self) -> str:
         return f"{self._prefix} {self.severity.name.lower()}: {self.message}"
 
     @classmethod
-    def from_comment(cls, filename: str, lineno: int, comment: str) -> "Message":
+    def from_comment(
+        cls, filename: Union[pathlib.Path, str], lineno: int, comment: str
+    ) -> "Message":
         """Create message object from Python *comment*.
 
         >>> Message.from_comment("foo.py", 1, "R: foo")
@@ -183,7 +186,7 @@ def from_comment(cls, filename: str, lineno: int, comment: str) -> "Message":
         else:
             revealed_type = None
         return Message(
-            filename,
+            str(filename),
             lineno=lineno,
             colno=colno,
             severity=Severity.from_string(m.group("severity")),
diff --git a/src/pytest_mypy_testing/parser.py b/src/pytest_mypy_testing/parser.py
index c0d9900..a38ea01 100644
--- a/src/pytest_mypy_testing/parser.py
+++ b/src/pytest_mypy_testing/parser.py
@@ -7,9 +7,10 @@
 import io
 import itertools
 import os
+import pathlib
 import sys
 import tokenize
-from typing import Iterable, Iterator, List, Optional, Set, Tuple
+from typing import Iterable, Iterator, List, Optional, Set, Tuple, Union
 
 from .message import Message
 
@@ -71,7 +72,7 @@ class MypyTestFile:
 
 
 def iter_comments(
-    filename: str, token_lists: List[List[tokenize.TokenInfo]]
+    filename: Union[pathlib.Path, str], token_lists: List[List[tokenize.TokenInfo]]
 ) -> Iterator[tokenize.TokenInfo]:
     for toks in token_lists:
         for tok in toks:
@@ -80,7 +81,7 @@ def iter_comments(
 
 
 def iter_mypy_comments(
-    filename: str, tokens: List[List[tokenize.TokenInfo]]
+    filename: Union[pathlib.Path, str], tokens: List[List[tokenize.TokenInfo]]
 ) -> Iterator[Message]:
     for tok in iter_comments(filename, tokens):
         try:
@@ -103,9 +104,9 @@ def generate_per_line_token_lists(source: str) -> Iterator[List[tokenize.TokenIn
         i += 1
 
 
-def parse_file(filename: str, config) -> MypyTestFile:
+def parse_file(filename: Union[os.PathLike, str, pathlib.Path], config) -> MypyTestFile:
     """Parse *filename* and return information about mypy test cases."""
-    filename = os.path.abspath(filename)
+    filename = pathlib.Path(filename).resolve()
     with open(filename, "r", encoding="utf-8") as f:
         source_text = f.read()
 
@@ -113,7 +114,7 @@ def parse_file(filename: str, config) -> MypyTestFile:
     token_lists = list(generate_per_line_token_lists(source_text))
     messages = list(iter_mypy_comments(filename, token_lists))
 
-    tree = ast.parse(source_text, filename=filename)
+    tree = ast.parse(source_text, filename=str(filename))
     if sys.version_info < (3, 8):
         _add_end_lineno_if_missing(tree, len(source_lines))
 
@@ -131,7 +132,10 @@ def parse_file(filename: str, config) -> MypyTestFile:
             )
 
     return MypyTestFile(
-        filename=filename, source_lines=source_lines, items=items, messages=messages
+        filename=str(filename),
+        source_lines=source_lines,
+        items=items,
+        messages=messages,
     )
 
 
@@ -140,18 +144,18 @@ def _add_end_lineno_if_missing(tree, line_count: int):
     prev_node: Optional[ast.AST] = None
     for node in ast.iter_child_nodes(tree):
         if prev_node is not None:
-            setattr(prev_node, "end_lineno", node.lineno)
+            setattr(prev_node, "end_lineno", node.lineno)  # noqa: B010
         prev_node = node
     if prev_node:
-        setattr(prev_node, "end_lineno", line_count)
+        setattr(prev_node, "end_lineno", line_count)  # noqa: B010
 
 
 def _find_marks(func_node: ast.FunctionDef) -> Set[str]:
-    return set(
+    return {
         name.split(".", 2)[2]
         for name, _ in _iter_func_decorators(func_node)
         if name.startswith("pytest.mark.")
-    )
+    }
 
 
 def _iter_func_decorators(func_node: ast.FunctionDef) -> Iterator[Tuple[str, ast.AST]]:
diff --git a/src/pytest_mypy_testing/plugin.py b/src/pytest_mypy_testing/plugin.py
index fdd91c2..5f146dc 100644
--- a/src/pytest_mypy_testing/plugin.py
+++ b/src/pytest_mypy_testing/plugin.py
@@ -2,14 +2,14 @@
 # SPDX-License-Identifier: Apache-2.0 OR MIT
 
 import os
+import pathlib
 import tempfile
-from typing import Iterable, Iterator, List, NamedTuple, Optional, Tuple
+from typing import Iterable, Iterator, List, NamedTuple, Optional, Tuple, Union
 
 import mypy.api
 import pytest
 from _pytest._code.code import ReprEntry, ReprFileLocation
 from _pytest.config import Config
-from py._path.local import LocalPath
 
 from .message import Message, Severity
 from .output_processing import OutputMismatch, diff_message_sequences
@@ -36,6 +36,8 @@ def __init__(self, item, errors: Iterable[OutputMismatch]):
 
 
 class PytestMypyTestItem(pytest.Item):
+    parent: "PytestMypyFile"
+
     def __init__(
         self,
         name: str,
@@ -72,7 +74,7 @@ def runtest(self) -> None:
         if errors:
             raise MypyAssertionError(item=self, errors=errors)
 
-    def reportinfo(self) -> Tuple[str, Optional[int], str]:
+    def reportinfo(self) -> Tuple[Union["os.PathLike[str]", str], Optional[int], str]:
         return self.parent.fspath, self.mypy_item.lineno, self.name
 
     def repr_failure(self, excinfo, style=None):
@@ -153,7 +155,8 @@ def run_mypy(self, item: MypyTestItem) -> Tuple[int, List[Message]]:
             ),
         )
 
-    def _run_mypy(self, filename: str) -> MypyResult:
+    def _run_mypy(self, filename: Union[pathlib.Path, os.PathLike, str]) -> MypyResult:
+        filename = pathlib.Path(filename)
         with tempfile.TemporaryDirectory(prefix="pytest-mypy-testing-") as tmp_dir_name:
 
             mypy_cache_dir = os.path.join(tmp_dir_name, "mypy_cache")
@@ -178,9 +181,6 @@ def _run_mypy(self, filename: str) -> MypyResult:
 
         lines = (out + err).splitlines()
 
-        # for line in lines:
-        #     print("%%%%", line)
-
         file_messages = [
             msg
             for msg in map(Message.from_output, lines)
@@ -213,7 +213,7 @@ def _run_mypy(self, filename: str) -> MypyResult:
 
 if PYTEST_VERSION_INFO < (7,):
 
-    def pytest_collect_file(path: LocalPath, parent):
+    def pytest_collect_file(path, parent):
         if path.ext == ".mypy-testing" or _is_pytest_test_file(path, parent):
             file = PytestMypyFile.from_parent(parent=parent, fspath=path)
             if file.mypy_file.items:
@@ -222,7 +222,7 @@ def pytest_collect_file(path: LocalPath, parent):
 
 else:
 
-    def pytest_collect_file(file_path, path: LocalPath, parent):  # type: ignore
+    def pytest_collect_file(file_path, path, parent):  # type: ignore
         if path.ext == ".mypy-testing" or _is_pytest_test_file(path, parent):
             file = PytestMypyFile.from_parent(parent=parent, path=file_path)
             if file.mypy_file.items:
@@ -230,7 +230,7 @@ def pytest_collect_file(file_path, path: LocalPath, parent):  # type: ignore
         return None
 
 
-def _is_pytest_test_file(path: LocalPath, parent):
+def _is_pytest_test_file(path, parent):
     """Return `True` if *path* is considered to be a pytest test file."""
     # Based on _pytest/python.py::pytest_collect_file
     fn_patterns = parent.config.getini("python_files") + ["__init__.py"]
@@ -259,4 +259,4 @@ def _add_reveal_type_to_builtins():
     import builtins
 
     if not hasattr(builtins, "reveal_type"):
-        setattr(builtins, "reveal_type", lambda x: x)
+        setattr(builtins, "reveal_type", lambda x: x)  # noqa: B010
diff --git a/tox.ini b/tox.ini
index 57d69d9..410d9cb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,10 +3,10 @@
 [tox]
 isolated_build = True
 envlist =
-    {py36}-pytest{60,61,62,70}-mypy{0910,0931,0960}
-    {py37,py38,py39}-pytest{62,70,71}-mypy{0910,0931,0960}
-    {py310}-pytest{62,71}-mypy{0910,0931,0960}
-    py-pytest{62,70,71}-mypy{0910,0931,0960}
+    {py36}-pytest{60,61,62,70}-mypy{0910,0931,0971}
+    {py37,py38,py39}-pytest{62,70,71}-mypy{0910,0931,0971}
+    {py310}-pytest{62,71}-mypy{0910,0931,0971}
+    py-pytest{62,70,71}-mypy{0910,0931,0971}
     linting
 
 [testenv]
@@ -29,6 +29,8 @@ deps =
     mypy0942: mypy==0.942
     mypy0950: mypy==0.950
     mypy0960: mypy==0.960
+    mypy0961: mypy==0.961
+    mypy0971: mypy==0.971
 setenv =
     COVERAGE_FILE={toxinidir}/build/{envname}/coverage
 commands =
@@ -37,18 +39,63 @@ commands =
       --html={toxinidir}/build/{envname}/pytest-report.html \
       --junitxml={toxinidir}/build/{envname}/junit.xml
 
-[testenv:linting]
+[testenv:black]
+basepython = python3.10
+skip_install = True
+deps =
+    -c constraints.txt
+    black
+commands =
+    python -m black --check --fast --diff {posargs} .
+
+[testenv:flake8]
+basepython = python3.10
+skip_install = True
+deps =
+    -c constraints.txt
+    flake8
+    flake8-bugbear
+    flake8-comprehensions
+    flake8-html
+    flake8-mutable
+    flake8-pyi
+    flake8-logging-format
+commands =
+    python -m flake8 {posargs}
+
+[testenv:isort]
+basepython = python3.10
+skip_install = True
+deps =
+    -c constraints.txt
+    isort
+commands =
+    python -m isort . --check {posargs}
+
+[testenv:mypy]
 basepython = python3.10
 skip_install = True
 deps =
     -cconstraints.txt
     mypy
-    flake8
-    flake8-isort
-    flake8-black
+    pytest
 commands =
     mypy src tests
-    flake8
+
+[testenv:linting]
+basepython = python3.10
+skip_install = True
+deps =
+    -cconstraints.txt
+    {[testenv:black]deps}
+    {[testenv:flake8]deps}
+    {[testenv:isort]deps}
+    {[testenv:mypy]deps}
+commands =
+    {[testenv:black]commands}
+    {[testenv:flake8]commands}
+    {[testenv:isort]commands}
+    {[testenv:mypy]commands}
 
 [testenv:lock-requirements]
 basepython = python3.10