diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 836a062..e65ad31 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -12,6 +12,12 @@ repos:
       - id: debug-statements
       - id: check-yaml
         files: .*\.(yaml|yml)$
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.13.0
+    hooks:
+      - id: ruff-check
+        args: ['--fix', '--unsafe-fixes']
+      - id: ruff-format
   - repo: https://opendev.org/openstack/hacking
     rev: 7.0.0
     hooks:
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 0c474a0..f067dc7 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (C) 2020 Red Hat, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License"); you may
@@ -33,7 +32,7 @@
 extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.intersphinx',
-    'openstackdocstheme'
+    'openstackdocstheme',
 ]
 
 # Add any paths that contain templates here, relative to this directory.
@@ -50,7 +49,7 @@ master_doc = 'index'
 # General information about the project.
 project = 'microversion-parse'
 copyright = '2016, OpenStack'
-author = u'OpenStack'
+author = 'OpenStack'
 
 # openstackdocstheme options
 repository_name = 'openstack/microversion-parse'
@@ -92,7 +91,7 @@ latex_documents = [
         'microversion-parse.tex',
         'microversion-parse Documentation',
         'OpenStack',
-        'manual'
+        'manual',
     ),
 ]
 
@@ -104,9 +103,9 @@ man_pages = [
     (
         master_doc,
         'microversion-parse',
-        u'microversion-parse Documentation',
+        'microversion-parse Documentation',
         [author],
-        1
+        1,
     )
 ]
 
@@ -120,11 +119,11 @@ texinfo_documents = [
     (
         master_doc,
         'microversion-parse',
-        u'microversion-parse Documentation',
+        'microversion-parse Documentation',
         author,
         'microversion-parse',
         'One line description of project.',
-        'Miscellaneous'
+        'Miscellaneous',
     ),
 ]
 
diff --git a/microversion_parse/__init__.py b/microversion_parse/__init__.py
index d126ea7..7a5efa4 100644
--- a/microversion_parse/__init__.py
+++ b/microversion_parse/__init__.py
@@ -26,17 +26,16 @@ class Version(collections.namedtuple('Version', 'major minor')):
 
     def __new__(cls, major, minor):
         """Add min and max version attributes to the tuple."""
-        self = super(Version, cls).__new__(cls, major, minor)
+        self = super().__new__(cls, major, minor)
         self.max_version = (-1, 0)
         self.min_version = (-1, 0)
         return self
 
     def __str__(self):
-        return '%s.%s' % (self.major, self.minor)
+        return f'{self.major}.{self.minor}'
 
     def matches(self, min_version=None, max_version=None):
-        """Is this version within min_version and max_version.
-        """
+        """Is this version within min_version and max_version."""
         # NOTE(cdent): min_version and max_version are expected
         # to be set by the code that is creating the Version, if
         # they are known.
@@ -155,7 +154,8 @@ def _extract_header_value(headers, header_name):
         value = headers[header_name]
     except KeyError:
         wsgi_header_name = ENVIRON_HTTP_HEADER_FMT.format(
-            header_name.replace('-', '_'))
+            header_name.replace('-', '_')
+        )
         value = headers[wsgi_header_name]
     return value
 
@@ -173,11 +173,9 @@ def parse_version_string(version_string):
         # ValueError, TypeError or AttributeError when the incoming
         # data is poorly formed but will, however, naturally adapt to
         # extraneous whitespace.
-        return Version(*(int(value) for value
-                         in version_string.split('.', 1)))
+        return Version(*(int(value) for value in version_string.split('.', 1)))
     except (ValueError, TypeError, AttributeError) as exc:
-        raise TypeError('invalid version string: %s; %s' % (
-            version_string, exc))
+        raise TypeError(f'invalid version string: {version_string}; {exc}')
 
 
 def extract_version(headers, service_type, versions_list):
@@ -213,4 +211,4 @@ def extract_version(headers, service_type, versions_list):
     # to administratively disable a version if we really need to.
     if str(request_version) in versions_list:
         return request_version
-    raise ValueError('Unacceptable version header: %s' % version_string)
+    raise ValueError(f'Unacceptable version header: {version_string}')
diff --git a/microversion_parse/middleware.py b/microversion_parse/middleware.py
index 00a8693..6961593 100644
--- a/microversion_parse/middleware.py
+++ b/microversion_parse/middleware.py
@@ -18,7 +18,7 @@ import webob.dec
 import microversion_parse
 
 
-class MicroversionMiddleware(object):
+class MicroversionMiddleware:
     """WSGI middleware for getting microversion info.
 
     The application will get a WSGI environ with a
@@ -37,8 +37,9 @@ class MicroversionMiddleware(object):
     Otherwise the application is called.
     """
 
-    def __init__(self, application, service_type, versions,
-                 json_error_formatter=None):
+    def __init__(
+        self, application, service_type, versions, json_error_formatter=None
+    ):
         """Create the WSGI middleware.
 
         :param application: The application hosting the service.
@@ -51,7 +52,7 @@ class MicroversionMiddleware(object):
         """
         self.application = application
         self.service_type = service_type
-        self.microversion_environ = '%s.microversion' % service_type
+        self.microversion_environ = f'{service_type}.microversion'
         self.versions = versions
         self.json_error_formatter = json_error_formatter
 
@@ -59,21 +60,24 @@ class MicroversionMiddleware(object):
     def __call__(self, req):
         try:
             microversion = microversion_parse.extract_version(
-                req.headers, self.service_type, self.versions)
+                req.headers, self.service_type, self.versions
+            )
         # TODO(cdent): These error response are not formatted according to
         # api-sig guidelines, unless a json_error_formatter is provided
         # that can do it. For an example, see the placement service.
         except ValueError as exc:
             raise webob.exc.HTTPNotAcceptable(
-                ('Invalid microversion: %(error)s') % {'error': exc},
-                json_formatter=self.json_error_formatter)
+                (f'Invalid microversion: {exc}'),
+                json_formatter=self.json_error_formatter,
+            )
         except TypeError as exc:
             raise webob.exc.HTTPBadRequest(
-                ('Invalid microversion: %(error)s') % {'error': exc},
-                json_formatter=self.json_error_formatter)
+                (f'Invalid microversion: {exc}'),
+                json_formatter=self.json_error_formatter,
+            )
 
         req.environ[self.microversion_environ] = microversion
-        microversion_header = '%s %s' % (self.service_type, microversion)
+        microversion_header = f'{self.service_type} {microversion}'
         standard_header = microversion_parse.STANDARD_HEADER
 
         try:
diff --git a/microversion_parse/tests/test_extract_version.py b/microversion_parse/tests/test_extract_version.py
index 62bcf83..55b6a86 100644
--- a/microversion_parse/tests/test_extract_version.py
+++ b/microversion_parse/tests/test_extract_version.py
@@ -18,9 +18,8 @@ import microversion_parse
 
 
 class TestVersion(testtools.TestCase):
-
     def setUp(self):
-        super(TestVersion, self).setUp()
+        super().setUp()
         self.version = microversion_parse.Version(1, 5)
 
     def test_version_is_tuple(self):
@@ -69,7 +68,6 @@ class TestVersion(testtools.TestCase):
 
 
 class TestParseVersionString(testtools.TestCase):
-
     def test_good_version(self):
         version = microversion_parse.parse_version_string('1.1')
         self.assertEqual((1, 1), version)
@@ -81,57 +79,68 @@ class TestParseVersionString(testtools.TestCase):
         self.assertEqual(microversion_parse.Version(1, 1), version)
 
     def test_non_numeric(self):
-        self.assertRaises(TypeError,
-                          microversion_parse.parse_version_string,
-                          'hello')
+        self.assertRaises(
+            TypeError, microversion_parse.parse_version_string, 'hello'
+        )
 
     def test_mixed_alphanumeric(self):
-        self.assertRaises(TypeError,
-                          microversion_parse.parse_version_string,
-                          '1.a')
+        self.assertRaises(
+            TypeError, microversion_parse.parse_version_string, '1.a'
+        )
 
     def test_too_many_numeric(self):
-        self.assertRaises(TypeError,
-                          microversion_parse.parse_version_string,
-                          '1.1.1')
+        self.assertRaises(
+            TypeError, microversion_parse.parse_version_string, '1.1.1'
+        )
 
     def test_not_string(self):
-        self.assertRaises(TypeError,
-                          microversion_parse.parse_version_string,
-                          1.1)
+        self.assertRaises(
+            TypeError, microversion_parse.parse_version_string, 1.1
+        )
 
 
 class TestExtractVersion(testtools.TestCase):
-
     def setUp(self):
-        super(TestExtractVersion, self).setUp()
+        super().setUp()
         self.headers = [
             ('OpenStack-API-Version', 'service1 1.2'),
             ('OpenStack-API-Version', 'service2 1.5'),
             ('OpenStack-API-Version', 'service3 latest'),
             ('OpenStack-API-Version', 'service4 2.5'),
         ]
-        self.version_list = ['1.1', '1.2', '1.3', '1.4',
-                             '2.1', '2.2', '2.3', '2.4']
+        self.version_list = [
+            '1.1',
+            '1.2',
+            '1.3',
+            '1.4',
+            '2.1',
+            '2.2',
+            '2.3',
+            '2.4',
+        ]
 
     def test_simple_extract(self):
         version = microversion_parse.extract_version(
-            self.headers, 'service1', self.version_list)
+            self.headers, 'service1', self.version_list
+        )
         self.assertEqual((1, 2), version)
 
     def test_default_min(self):
         version = microversion_parse.extract_version(
-            self.headers, 'notlisted', self.version_list)
+            self.headers, 'notlisted', self.version_list
+        )
         self.assertEqual((1, 1), version)
 
     def test_latest(self):
         version = microversion_parse.extract_version(
-            self.headers, 'service3', self.version_list)
+            self.headers, 'service3', self.version_list
+        )
         self.assertEqual((2, 4), version)
 
     def test_min_max_extract(self):
         version = microversion_parse.extract_version(
-            self.headers, 'service1', self.version_list)
+            self.headers, 'service1', self.version_list
+        )
 
         # below min
         self.assertFalse(version.matches((1, 3)))
@@ -144,13 +153,24 @@ class TestExtractVersion(testtools.TestCase):
         # explicit min
         self.assertFalse(version.matches(min_version=(2, 3)))
         # explicit both
-        self.assertTrue(version.matches(min_version=(0, 3),
-                                        max_version=(1, 5)))
+        self.assertTrue(
+            version.matches(min_version=(0, 3), max_version=(1, 5))
+        )
 
     def test_version_disabled(self):
-        self.assertRaises(ValueError, microversion_parse.extract_version,
-                          self.headers, 'service2', self.version_list)
+        self.assertRaises(
+            ValueError,
+            microversion_parse.extract_version,
+            self.headers,
+            'service2',
+            self.version_list,
+        )
 
     def test_version_out_of_range(self):
-        self.assertRaises(ValueError, microversion_parse.extract_version,
-                          self.headers, 'service4', self.version_list)
+        self.assertRaises(
+            ValueError,
+            microversion_parse.extract_version,
+            self.headers,
+            'service4',
+            self.version_list,
+        )
diff --git a/microversion_parse/tests/test_get_version.py b/microversion_parse/tests/test_get_version.py
index fa16681..0b8d55c 100644
--- a/microversion_parse/tests/test_get_version.py
+++ b/microversion_parse/tests/test_get_version.py
@@ -17,7 +17,6 @@ import microversion_parse
 
 
 class TestFoldHeaders(testtools.TestCase):
-
     def test_dict_headers(self):
         headers = {
             'header-one': 'alpha',
@@ -39,20 +38,19 @@ class TestFoldHeaders(testtools.TestCase):
 
         folded_headers = microversion_parse.fold_headers(headers)
         self.assertEqual(2, len(folded_headers))
-        self.assertEqual(set(['header-one', 'header-two']),
-                         set(folded_headers.keys()))
+        self.assertEqual(
+            set(['header-one', 'header-two']), set(folded_headers.keys())
+        )
         self.assertEqual('alpha,gamma', folded_headers['header-one'])
 
     def test_bad_headers(self):
         headers = 'wow this is not a headers'
-        self.assertRaises(ValueError, microversion_parse.fold_headers,
-                          headers)
+        self.assertRaises(ValueError, microversion_parse.fold_headers, headers)
 
     # TODO(cdent): Test with request objects from frameworks.
 
 
 class TestStandardHeader(testtools.TestCase):
-
     def test_simple_match(self):
         headers = {
             'header-one': 'alpha',
@@ -88,8 +86,7 @@ class TestStandardHeader(testtools.TestCase):
             'openstack-api-version': 'network 5.9 ',
             'header-two': 'beta',
         }
-        version = microversion_parse.check_standard_header(
-            headers, 'compute')
+        version = microversion_parse.check_standard_header(headers, 'compute')
         self.assertEqual(None, version)
 
     def test_match_multiple_services(self):
@@ -98,11 +95,11 @@ class TestStandardHeader(testtools.TestCase):
             'openstack-api-version': 'network 5.9 ,compute 2.1,telemetry 7.8',
             'header-two': 'beta',
         }
-        version = microversion_parse.check_standard_header(
-            headers, 'compute')
+        version = microversion_parse.check_standard_header(headers, 'compute')
         self.assertEqual('2.1', version)
         version = microversion_parse.check_standard_header(
-            headers, 'telemetry')
+            headers, 'telemetry'
+        )
         self.assertEqual('7.8', version)
 
     def test_match_multiple_same_service(self):
@@ -111,13 +108,11 @@ class TestStandardHeader(testtools.TestCase):
             'openstack-api-version': 'compute 5.9 ,compute 2.1,compute 7.8',
             'header-two': 'beta',
         }
-        version = microversion_parse.check_standard_header(
-            headers, 'compute')
+        version = microversion_parse.check_standard_header(headers, 'compute')
         self.assertEqual('7.8', version)
 
 
 class TestLegacyHeaders(testtools.TestCase):
-
     def test_legacy_headers_straight(self):
         headers = {
             'header-one': 'alpha',
@@ -125,8 +120,10 @@ class TestLegacyHeaders(testtools.TestCase):
             'header-two': 'beta',
         }
         version = microversion_parse.get_version(
-            headers, service_type='compute',
-            legacy_headers=['openstack-CoMpUte-api-version'])
+            headers,
+            service_type='compute',
+            legacy_headers=['openstack-CoMpUte-api-version'],
+        )
         self.assertEqual('2.1', version)
 
     def test_legacy_headers_folded(self):
@@ -136,8 +133,10 @@ class TestLegacyHeaders(testtools.TestCase):
             'header-two': 'beta',
         }
         version = microversion_parse.get_version(
-            headers, service_type='compute',
-            legacy_headers=['openstack-compute-api-version'])
+            headers,
+            service_type='compute',
+            legacy_headers=['openstack-compute-api-version'],
+        )
         self.assertEqual('9.2', version)
 
     def test_older_legacy_headers(self):
@@ -147,9 +146,13 @@ class TestLegacyHeaders(testtools.TestCase):
             'header-two': 'beta',
         }
         version = microversion_parse.get_version(
-            headers, service_type='compute',
-            legacy_headers=['openstack-nova-api-version',
-                            'x-openstack-nova-api-version'])
+            headers,
+            service_type='compute',
+            legacy_headers=[
+                'openstack-nova-api-version',
+                'x-openstack-nova-api-version',
+            ],
+        )
         # We don't do x- for service types.
         self.assertEqual('9.2', version)
 
@@ -161,19 +164,26 @@ class TestLegacyHeaders(testtools.TestCase):
             'header-two': 'beta',
         }
         version = microversion_parse.get_version(
-            headers, service_type='compute',
-            legacy_headers=['openstack-compute-api-version',
-                            'x-openstack-nova-api-version'])
+            headers,
+            service_type='compute',
+            legacy_headers=[
+                'openstack-compute-api-version',
+                'x-openstack-nova-api-version',
+            ],
+        )
         self.assertEqual('3.7', version)
         version = microversion_parse.get_version(
-            headers, service_type='compute',
-            legacy_headers=['x-openstack-nova-api-version',
-                            'openstack-compute-api-version'])
+            headers,
+            service_type='compute',
+            legacy_headers=[
+                'x-openstack-nova-api-version',
+                'openstack-compute-api-version',
+            ],
+        )
         self.assertEqual('9.2', version)
 
 
 class TestGetHeaders(testtools.TestCase):
-
     def test_preference(self):
         headers = {
             'header-one': 'alpha',
@@ -183,15 +193,20 @@ class TestGetHeaders(testtools.TestCase):
             'header-two': 'beta',
         }
         version = microversion_parse.get_version(
-            headers, service_type='compute',
-            legacy_headers=['openstack-compute-api-version',
-                            'x-openstack-nova-api-version'])
+            headers,
+            service_type='compute',
+            legacy_headers=[
+                'openstack-compute-api-version',
+                'x-openstack-nova-api-version',
+            ],
+        )
         self.assertEqual('11.12', version)
 
     def test_no_headers(self):
         headers = {}
         version = microversion_parse.get_version(
-            headers, service_type='compute')
+            headers, service_type='compute'
+        )
         self.assertEqual(None, version)
 
     def test_unfolded_service(self):
@@ -202,7 +217,8 @@ class TestGetHeaders(testtools.TestCase):
             ('openstack-api-version', '3.0'),
         ]
         version = microversion_parse.get_version(
-            headers, service_type='compute')
+            headers, service_type='compute'
+        )
         self.assertEqual('2.0', version)
 
     def test_unfolded_in_name(self):
@@ -213,15 +229,17 @@ class TestGetHeaders(testtools.TestCase):
             ('openstack-telemetry-api-version', '3.0'),
         ]
         version = microversion_parse.get_version(
-            headers, service_type='compute',
-            legacy_headers=['x-openstack-nova-api-version'])
+            headers,
+            service_type='compute',
+            legacy_headers=['x-openstack-nova-api-version'],
+        )
         self.assertEqual('2.0', version)
 
     def test_capitalized_headers(self):
-        headers = {
-            'X-Openstack-Ironic-Api-Version': '123.456'
-        }
+        headers = {'X-Openstack-Ironic-Api-Version': '123.456'}
         version = microversion_parse.get_version(
-            headers, service_type='ironic',
-            legacy_headers=['X-Openstack-Ironic-Api-Version'])
+            headers,
+            service_type='ironic',
+            legacy_headers=['X-Openstack-Ironic-Api-Version'],
+        )
         self.assertEqual('123.456', version)
diff --git a/microversion_parse/tests/test_headers_from_wsgi_environ.py b/microversion_parse/tests/test_headers_from_wsgi_environ.py
index 525ac6e..0c1420c 100644
--- a/microversion_parse/tests/test_headers_from_wsgi_environ.py
+++ b/microversion_parse/tests/test_headers_from_wsgi_environ.py
@@ -17,13 +17,12 @@ import microversion_parse
 
 
 class TestHeadersFromWSGIEnviron(testtools.TestCase):
-
     def test_empty_environ(self):
         environ = {}
         expected = {}
         self.assertEqual(
-            expected,
-            microversion_parse.headers_from_wsgi_environ(environ))
+            expected, microversion_parse.headers_from_wsgi_environ(environ)
+        )
 
     def test_non_empty_no_headers(self):
         environ = {'PATH_INFO': '/foo/bar'}
@@ -32,30 +31,40 @@ class TestHeadersFromWSGIEnviron(testtools.TestCase):
         self.assertEqual(expected, found_headers)
 
     def test_headers(self):
-        environ = {'PATH_INFO': '/foo/bar',
-                   'HTTP_OPENSTACK_API_VERSION': 'placement 2.1',
-                   'HTTP_CONTENT_TYPE': 'application/json'}
-        expected = {'HTTP_OPENSTACK_API_VERSION': 'placement 2.1',
-                    'HTTP_CONTENT_TYPE': 'application/json'}
+        environ = {
+            'PATH_INFO': '/foo/bar',
+            'HTTP_OPENSTACK_API_VERSION': 'placement 2.1',
+            'HTTP_CONTENT_TYPE': 'application/json',
+        }
+        expected = {
+            'HTTP_OPENSTACK_API_VERSION': 'placement 2.1',
+            'HTTP_CONTENT_TYPE': 'application/json',
+        }
         found_headers = microversion_parse.headers_from_wsgi_environ(environ)
         self.assertEqual(expected, found_headers)
 
     def test_get_version_from_environ(self):
-        environ = {'PATH_INFO': '/foo/bar',
-                   'HTTP_OPENSTACK_API_VERSION': 'placement 2.1',
-                   'HTTP_CONTENT_TYPE': 'application/json'}
+        environ = {
+            'PATH_INFO': '/foo/bar',
+            'HTTP_OPENSTACK_API_VERSION': 'placement 2.1',
+            'HTTP_CONTENT_TYPE': 'application/json',
+        }
         expected_version = '2.1'
         headers = microversion_parse.headers_from_wsgi_environ(environ)
         version = microversion_parse.get_version(headers, 'placement')
         self.assertEqual(expected_version, version)
 
     def test_get_version_from_environ_legacy(self):
-        environ = {'PATH_INFO': '/foo/bar',
-                   'HTTP_X_OPENSTACK_PLACEMENT_API_VERSION': '2.1',
-                   'HTTP_CONTENT_TYPE': 'application/json'}
+        environ = {
+            'PATH_INFO': '/foo/bar',
+            'HTTP_X_OPENSTACK_PLACEMENT_API_VERSION': '2.1',
+            'HTTP_CONTENT_TYPE': 'application/json',
+        }
         expected_version = '2.1'
         headers = microversion_parse.headers_from_wsgi_environ(environ)
         version = microversion_parse.get_version(
-            headers, 'placement',
-            legacy_headers=['x-openstack-placement-api-version'])
+            headers,
+            'placement',
+            legacy_headers=['x-openstack-placement-api-version'],
+        )
         self.assertEqual(expected_version, version)
diff --git a/microversion_parse/tests/test_middleware.py b/microversion_parse/tests/test_middleware.py
index 9060d08..731b7a0 100644
--- a/microversion_parse/tests/test_middleware.py
+++ b/microversion_parse/tests/test_middleware.py
@@ -32,7 +32,7 @@ VERSIONS = [
 ]
 
 
-class SimpleWSGI(object):
+class SimpleWSGI:
     """A WSGI application that can be contiained within a middlware."""
 
     def __call__(self, environ, start_response):
@@ -41,12 +41,13 @@ class SimpleWSGI(object):
             start_response('200 OK', [('content-type', 'text/plain')])
             return [b'good']
 
-        raise webob.exc.HTTPNotFound('%s not found' % path_info)
+        raise webob.exc.HTTPNotFound(f'{path_info} not found')
 
 
 def app():
     app = middleware.MicroversionMiddleware(
-            SimpleWSGI(), SERVICE_TYPE, VERSIONS)
+        SimpleWSGI(), SERVICE_TYPE, VERSIONS
+    )
     return app
 
 
@@ -54,4 +55,5 @@ def load_tests(loader, tests, pattern):
     """Provide a TestSuite to the discovery process."""
     test_dir = os.path.join(os.path.dirname(__file__), TESTS_DIR)
     return driver.build_tests(
-        test_dir, loader, test_loader_name=__name__, intercept=app)
+        test_dir, loader, test_loader_name=__name__, intercept=app
+    )
diff --git a/microversion_parse/tests/test_webob.py b/microversion_parse/tests/test_webob.py
index a2e36c8..405d1a1 100644
--- a/microversion_parse/tests/test_webob.py
+++ b/microversion_parse/tests/test_webob.py
@@ -22,59 +22,74 @@ class TestWebobHeaders(testtools.TestCase):
     """Webob uses a dict-like header which is not actually a dict."""
 
     def test_simple_headers(self):
-        headers = wb_headers.EnvironHeaders({
-            'HTTP_HEADER_ONE': 'alpha',
-            'HTTP_HEADER_TWO': 'beta',
-            'HTTP_HEADER_THREE': 'gamma',
-        })
+        headers = wb_headers.EnvironHeaders(
+            {
+                'HTTP_HEADER_ONE': 'alpha',
+                'HTTP_HEADER_TWO': 'beta',
+                'HTTP_HEADER_THREE': 'gamma',
+            }
+        )
 
         folded_headers = microversion_parse.fold_headers(headers)
         self.assertEqual(3, len(folded_headers))
-        self.assertEqual(set(['header-one', 'header-three', 'header-two']),
-                         set(folded_headers.keys()))
+        self.assertEqual(
+            set(['header-one', 'header-three', 'header-two']),
+            set(folded_headers.keys()),
+        )
         self.assertEqual('gamma', folded_headers['header-three'])
 
     def test_simple_match(self):
-        headers = wb_headers.EnvironHeaders({
-            'HTTP_HEADER_ONE': 'alpha',
-            'HTTP_OPENSTACK_API_VERSION': 'compute 2.1',
-            'HTTP_HEADER_TWO': 'beta',
-        })
+        headers = wb_headers.EnvironHeaders(
+            {
+                'HTTP_HEADER_ONE': 'alpha',
+                'HTTP_OPENSTACK_API_VERSION': 'compute 2.1',
+                'HTTP_HEADER_TWO': 'beta',
+            }
+        )
         version = microversion_parse.check_standard_header(headers, 'compute')
         self.assertEqual('2.1', version)
 
     def test_match_multiple_services(self):
-        headers = wb_headers.EnvironHeaders({
-            'HTTP_HEADER_ONE': 'alpha',
-            'HTTP_OPENSTACK_API_VERSION':
-            'network 5.9 ,compute 2.1,telemetry 7.8',
-            'HTTP_HEADER_TWO': 'beta',
-        })
-        version = microversion_parse.check_standard_header(
-            headers, 'compute')
+        headers = wb_headers.EnvironHeaders(
+            {
+                'HTTP_HEADER_ONE': 'alpha',
+                'HTTP_OPENSTACK_API_VERSION': 'network 5.9 ,compute 2.1,telemetry 7.8',
+                'HTTP_HEADER_TWO': 'beta',
+            }
+        )
+        version = microversion_parse.check_standard_header(headers, 'compute')
         self.assertEqual('2.1', version)
         version = microversion_parse.check_standard_header(
-            headers, 'telemetry')
+            headers, 'telemetry'
+        )
         self.assertEqual('7.8', version)
 
     def test_legacy_headers_straight(self):
-        headers = wb_headers.EnvironHeaders({
-            'HTTP_HEADER_ONE': 'alpha',
-            'HTTP_X_OPENSTACK_NOVA_API_VERSION': ' 2.1 ',
-            'HTTP_HEADER_TWO': 'beta',
-        })
+        headers = wb_headers.EnvironHeaders(
+            {
+                'HTTP_HEADER_ONE': 'alpha',
+                'HTTP_X_OPENSTACK_NOVA_API_VERSION': ' 2.1 ',
+                'HTTP_HEADER_TWO': 'beta',
+            }
+        )
         version = microversion_parse.get_version(
-            headers, service_type='compute',
-            legacy_headers=['x-openstack-nova-api-version'])
+            headers,
+            service_type='compute',
+            legacy_headers=['x-openstack-nova-api-version'],
+        )
         self.assertEqual('2.1', version)
 
     def test_legacy_headers_folded(self):
-        headers = wb_headers.EnvironHeaders({
-            'HTTP_HEADER_ONE': 'alpha',
-            'HTTP_X_OPENSTACK_NOVA_API_VERSION': ' 2.1, 9.2 ',
-            'HTTP_HEADER_TWO': 'beta',
-        })
+        headers = wb_headers.EnvironHeaders(
+            {
+                'HTTP_HEADER_ONE': 'alpha',
+                'HTTP_X_OPENSTACK_NOVA_API_VERSION': ' 2.1, 9.2 ',
+                'HTTP_HEADER_TWO': 'beta',
+            }
+        )
         version = microversion_parse.get_version(
-            headers, service_type='compute',
-            legacy_headers=['x-openstack-nova-api-version'])
+            headers,
+            service_type='compute',
+            legacy_headers=['x-openstack-nova-api-version'],
+        )
         self.assertEqual('9.2', version)
diff --git a/pyproject.toml b/pyproject.toml
index d04fe09..a08ff5e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,3 +33,20 @@ Repository = "https://opendev.org/openstack/microversion-parse"
 packages = [
     "microversion_parse"
 ]
+
+[tool.ruff]
+line-length = 79
+
+[tool.ruff.format]
+quote-style = "single"
+docstring-code-format = true
+
+[tool.ruff.lint]
+select = ["E4", "E7", "E9", "F", "S", "U"]
+ignore = [
+    # we only use asserts for type narrowing
+    "S101",
+]
+
+[tool.ruff.lint.per-file-ignores]
+"microversion_parse/tests/*" = ["S"]
diff --git a/setup.py b/setup.py
index 7f1bbe8..808f790 100644
--- a/setup.py
+++ b/setup.py
@@ -15,4 +15,5 @@ import setuptools
 
 setuptools.setup(
     setup_requires=['pbr'],
-    pbr=True)
+    pbr=True,
+)
diff --git a/tox.ini b/tox.ini
index 851eba9..74cef87 100644
--- a/tox.ini
+++ b/tox.ini
@@ -48,6 +48,8 @@ whitelist_externals =
     rm
 
 [flake8]
-ignore = H405,E126
+# We only enable the hacking (H) checks
+select = H
+ignore = H405
 exclude = .venv,.git,.tox,dist,*egg,*.egg-info,build,examples,doc
 show-source = true