diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 6413d30a0..2349078d5 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -6,3 +6,5 @@ a81731039c118543398c90869e608dde0acaf32c
 af2c352786f952d819e69b928bf6c99dcde5954b
 # Compile requirements to update comments
 5821434b42203b1080dcdc480d1ffcf07fe53a90
+# Format with Ruff
+e72aba6d7e5891ac777f533eef6f7520410c9e0b
diff --git a/Makefile b/Makefile
index 0d51fe336..bb1c8cd56 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,6 @@ APP_BIN := $(ENV_DIR)/bin/promgen
 CELERY_BIN := $(ENV_DIR)/bin/celery
 SPHINX  := $(ENV_DIR)/bin/sphinx-build
 RUFF_BIN := $(ENV_DIR)/bin/ruff
-BLACK_BIN := $(ENV_DIR)/bin/black
 
 DOCKER_TAG := promgen:local
 SYSTEM_PYTHON ?= python3.9
@@ -144,13 +143,11 @@ docs: $(SPHINX)
 $(RUFF_BIN): $(PIP_BIN)
 	$(PIP_BIN) install ruff
 
-$(BLACK_BIN): $(PIP_BIN)
-	$(PIP_BIN) install black
 
 .PHONY: format
-format: $(RUFF_BIN) $(BLACK_BIN)
+format: $(RUFF_BIN)
 	$(RUFF_BIN) check promgen --fix
-	$(BLACK_BIN) promgen
+	$(RUFF_BIN) format promgen
 
 
 #### Other assorted commands
diff --git a/promgen/celery.py b/promgen/celery.py
index bda7fd434..40ebd83a9 100644
--- a/promgen/celery.py
+++ b/promgen/celery.py
@@ -6,10 +6,8 @@
 import socket
 
 import celery
-
 from celery.signals import celeryd_after_setup
 
-
 logger = logging.getLogger(__name__)
 
 
diff --git a/promgen/context_processors.py b/promgen/context_processors.py
index af6259ce8..b841e3d7b 100644
--- a/promgen/context_processors.py
+++ b/promgen/context_processors.py
@@ -1,10 +1,10 @@
 # Copyright (c) 2017 LINE Corporation
 # These sources are released under the terms of the MIT license: see LICENSE
 
-from promgen import models, util
-
 from django.conf import settings
 
+from promgen import models, util
+
 
 def settings_in_view(request):
     return {
diff --git a/promgen/discovery/default.py b/promgen/discovery/default.py
index 7e2256c05..412455862 100644
--- a/promgen/discovery/default.py
+++ b/promgen/discovery/default.py
@@ -5,8 +5,7 @@
 
 from django.shortcuts import get_object_or_404
 
-from promgen import models
-from promgen import discovery
+from promgen import discovery, models
 
 logger = logging.getLogger(__name__)
 
diff --git a/promgen/errors.py b/promgen/errors.py
index a6795d0c1..64631329f 100644
--- a/promgen/errors.py
+++ b/promgen/errors.py
@@ -1,6 +1,7 @@
 from enum import Enum
-from django.utils.translation import gettext as _
+
 from django.core.exceptions import ValidationError
+from django.utils.translation import gettext as _
 
 
 class ValidationErrorEnum(Enum):
diff --git a/promgen/forms.py b/promgen/forms.py
index 993e47f5f..2479debd3 100644
--- a/promgen/forms.py
+++ b/promgen/forms.py
@@ -8,7 +8,7 @@
 from django import forms
 from django.core.exceptions import ValidationError
 
-from promgen import models, plugins, prometheus, validators, errors
+from promgen import errors, models, plugins, prometheus, validators
 
 
 class ImportConfigForm(forms.Form):
diff --git a/promgen/management/commands/import-probe.py b/promgen/management/commands/import-probe.py
index e53d399ba..8fae1ee63 100644
--- a/promgen/management/commands/import-probe.py
+++ b/promgen/management/commands/import-probe.py
@@ -6,7 +6,6 @@
 import sys
 
 import yaml
-
 from django.core import exceptions
 from django.core.management.base import BaseCommand
 
diff --git a/promgen/migrations/0001_squashed_0044_common-rules.py b/promgen/migrations/0001_squashed_0044_common-rules.py
index 5f7d377c2..fcf4013c0 100644
--- a/promgen/migrations/0001_squashed_0044_common-rules.py
+++ b/promgen/migrations/0001_squashed_0044_common-rules.py
@@ -1,10 +1,11 @@
 # Generated by Django 1.11.10 on 2018-02-07 06:56
 
-from django.conf import settings
 import django.contrib.sites.models
 import django.core.validators
-from django.db import migrations, models
 import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
 import promgen.models
 import promgen.validators
 
diff --git a/promgen/migrations/0003_alert_queue.py b/promgen/migrations/0003_alert_queue.py
index c8f052761..19c89f3b2 100644
--- a/promgen/migrations/0003_alert_queue.py
+++ b/promgen/migrations/0003_alert_queue.py
@@ -1,8 +1,8 @@
 # Generated by Django 2.0.7 on 2018-07-26 08:15
 
-from django.db import migrations, models
 import django.db.models.deletion
 import django.utils.timezone
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
diff --git a/promgen/migrations/0003_default-group.py b/promgen/migrations/0003_default-group.py
index 2d5ebe936..2eff59d7a 100644
--- a/promgen/migrations/0003_default-group.py
+++ b/promgen/migrations/0003_default-group.py
@@ -1,7 +1,7 @@
 # Generated by Django 2.0.7 on 2018-07-31 08:09
 
-from django.db import migrations
 from django.conf import settings
+from django.db import migrations
 
 
 def create_group(apps, schema_editor):
diff --git a/promgen/migrations/0005_project_owner.py b/promgen/migrations/0005_project_owner.py
index 8f1c66494..51ffd3665 100644
--- a/promgen/migrations/0005_project_owner.py
+++ b/promgen/migrations/0005_project_owner.py
@@ -1,8 +1,8 @@
 # Generated by Django 2.1.2 on 2018-11-16 02:23
 
+import django.db.models.deletion
 from django.conf import settings
 from django.db import migrations, models
-import django.db.models.deletion
 
 
 class Migration(migrations.Migration):
diff --git a/promgen/migrations/0007_message_filter.py b/promgen/migrations/0007_message_filter.py
index 3241835e5..6f9d69af8 100644
--- a/promgen/migrations/0007_message_filter.py
+++ b/promgen/migrations/0007_message_filter.py
@@ -1,7 +1,7 @@
 # Generated by Django 2.1.2 on 2019-03-06 06:20
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
diff --git a/promgen/migrations/0008_shard_service.py b/promgen/migrations/0008_shard_service.py
index edf751578..87cc8d086 100644
--- a/promgen/migrations/0008_shard_service.py
+++ b/promgen/migrations/0008_shard_service.py
@@ -1,7 +1,7 @@
 # Generated by Django 2.1.8 on 2019-04-22 07:15
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 def project_to_shard(apps, schema_editor):
diff --git a/promgen/migrations/0009_blackbox-module.py b/promgen/migrations/0009_blackbox-module.py
index 45f9ccc02..92013b32b 100644
--- a/promgen/migrations/0009_blackbox-module.py
+++ b/promgen/migrations/0009_blackbox-module.py
@@ -1,7 +1,7 @@
 # Generated by Django 2.1.8 on 2019-05-31 04:46
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 def default_probe(apps, schema_editor):
diff --git a/promgen/migrations/0011_notifier_counts.py b/promgen/migrations/0011_notifier_counts.py
index fbf5fe106..441539766 100644
--- a/promgen/migrations/0011_notifier_counts.py
+++ b/promgen/migrations/0011_notifier_counts.py
@@ -1,7 +1,7 @@
 # Generated by Django 2.2.4 on 2019-11-28 02:21
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
diff --git a/promgen/migrations/0012_validation_updates.py b/promgen/migrations/0012_validation_updates.py
index 25f63ae06..88898ffde 100644
--- a/promgen/migrations/0012_validation_updates.py
+++ b/promgen/migrations/0012_validation_updates.py
@@ -3,8 +3,8 @@
 # Generated by Django 2.2.9 on 2020-01-16 06:35
 
 import django.core.validators
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
diff --git a/promgen/migrations/0015_internal.py b/promgen/migrations/0015_internal.py
index 4dcd90fbb..6727f0d41 100644
--- a/promgen/migrations/0015_internal.py
+++ b/promgen/migrations/0015_internal.py
@@ -1,7 +1,7 @@
 # Generated by Django 2.2.10 on 2020-02-21 05:56
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
diff --git a/promgen/migrations/0016_alertlabel.py b/promgen/migrations/0016_alertlabel.py
index 21b61d83b..f09ba1277 100644
--- a/promgen/migrations/0016_alertlabel.py
+++ b/promgen/migrations/0016_alertlabel.py
@@ -1,7 +1,7 @@
 # Generated by Django 2.2.8 on 2020-02-21 06:03
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
diff --git a/promgen/notification/user.py b/promgen/notification/user.py
index eddae1fd4..c68634fb4 100644
--- a/promgen/notification/user.py
+++ b/promgen/notification/user.py
@@ -5,6 +5,7 @@
 
 from django import forms
 from django.contrib.auth.models import User
+
 from promgen import models
 from promgen.notification import NotificationBase
 
diff --git a/promgen/prometheus.py b/promgen/prometheus.py
index 144826309..5fd5b1984 100644
--- a/promgen/prometheus.py
+++ b/promgen/prometheus.py
@@ -11,7 +11,6 @@
 import pytz
 import yaml
 from dateutil import parser
-
 from django.core.exceptions import ValidationError
 from django.utils import timezone
 
diff --git a/promgen/proxy.py b/promgen/proxy.py
index c08c3fa59..3ace74422 100644
--- a/promgen/proxy.py
+++ b/promgen/proxy.py
@@ -11,9 +11,10 @@
 from django.http import HttpResponse, JsonResponse
 from django.views.generic import View
 from django.views.generic.base import TemplateView
-from promgen import forms, models, prometheus, util
 from requests.exceptions import HTTPError
 
+from promgen import forms, models, prometheus, util
+
 logger = logging.getLogger(__name__)
 
 
@@ -213,7 +214,7 @@ def post(self, request):
             return JsonResponse(
                 {
                     "messages": [
-                        {"class": "alert alert-danger", "message": e.response.text}
+                        {"class": "alert alert-danger", "message": e.response.text},
                     ]
                 },
                 status=e.response.status_code,
diff --git a/promgen/rest.py b/promgen/rest.py
index 623c0afe2..fd0e368d7 100644
--- a/promgen/rest.py
+++ b/promgen/rest.py
@@ -1,13 +1,12 @@
 # Copyright (c) 2019 LINE Corporation
 # These sources are released under the terms of the MIT license: see LICENSE
 
+from django.http import HttpResponse
+from django.views.generic import View
 from rest_framework import permissions, viewsets
 from rest_framework.decorators import action
 from rest_framework.response import Response
 
-from django.http import HttpResponse
-from django.views.generic import View
-
 from promgen import filters, models, prometheus, renderers, serializers, tasks
 
 
diff --git a/promgen/serializers.py b/promgen/serializers.py
index 97bd4e927..7f32faa71 100644
--- a/promgen/serializers.py
+++ b/promgen/serializers.py
@@ -1,8 +1,7 @@
 import collections
 
-from rest_framework import serializers
-
 from django.db.models import prefetch_related_objects
+from rest_framework import serializers
 
 import promgen.templatetags.promgen as macro
 from promgen import models, shortcuts
diff --git a/promgen/settings.py b/promgen/settings.py
index c4db32473..0374d4324 100644
--- a/promgen/settings.py
+++ b/promgen/settings.py
@@ -19,7 +19,6 @@
 
 import environ
 import yaml
-
 from django.urls import reverse_lazy
 
 from promgen import PROMGEN_CONFIG_FILE
@@ -175,8 +174,8 @@
 
 if "SENTRY_DSN" in os.environ:
     import sentry_sdk
-    from sentry_sdk.integrations.django import DjangoIntegration
     from sentry_sdk.integrations.celery import CeleryIntegration
+    from sentry_sdk.integrations.django import DjangoIntegration
 
     os.environ.setdefault("SENTRY_RELEASE", PROMGEN_VERSION)
     # By default we want to keep sentry's default of NOT sending user
diff --git a/promgen/shortcuts.py b/promgen/shortcuts.py
index ef4c60555..8c76e9f3e 100644
--- a/promgen/shortcuts.py
+++ b/promgen/shortcuts.py
@@ -5,6 +5,7 @@
 
 from django.conf import settings
 from django.shortcuts import resolve_url
+
 from promgen import models
 
 
diff --git a/promgen/signals.py b/promgen/signals.py
index 0de0f69da..d21947cbf 100644
--- a/promgen/signals.py
+++ b/promgen/signals.py
@@ -10,6 +10,7 @@
 from django.core.cache import cache
 from django.db.models.signals import post_delete, post_save, pre_delete, pre_save
 from django.dispatch import Signal, receiver
+
 from promgen import models, prometheus, tasks
 
 logger = logging.getLogger(__name__)
diff --git a/promgen/tasks.py b/promgen/tasks.py
index fb72ef5b5..9c03f4709 100644
--- a/promgen/tasks.py
+++ b/promgen/tasks.py
@@ -9,7 +9,7 @@
 from celery import shared_task
 from requests.exceptions import RequestException
 
-from promgen import models, prometheus, util, notification
+from promgen import models, notification, prometheus, util
 
 logger = logging.getLogger(__name__)
 
diff --git a/promgen/templatetags/promgen.py b/promgen/templatetags/promgen.py
index 59f9414e2..fadd9f41e 100644
--- a/promgen/templatetags/promgen.py
+++ b/promgen/templatetags/promgen.py
@@ -8,13 +8,12 @@
 from urllib.parse import urlencode
 
 import yaml
-from pytz import timezone
-
 from django import template
 from django.urls import reverse
 from django.utils.html import format_html
 from django.utils.safestring import mark_safe
 from django.utils.translation import ugettext as _
+from pytz import timezone
 
 from promgen import util
 
diff --git a/promgen/tests/__init__.py b/promgen/tests/__init__.py
index c5ec053c9..d66f81f79 100644
--- a/promgen/tests/__init__.py
+++ b/promgen/tests/__init__.py
@@ -2,12 +2,12 @@
 # These sources are released under the terms of the MIT license: see LICENSE
 
 import json
-from django.urls import reverse
-import yaml
 
+import yaml
+from django.conf import settings
 from django.contrib.auth.models import Permission, User
 from django.test import TestCase
-from django.conf import settings
+from django.urls import reverse
 
 
 class Data:
diff --git a/promgen/tests/notification/test_webhook.py b/promgen/tests/notification/test_webhook.py
index 2d5914e9e..091fc03b6 100644
--- a/promgen/tests/notification/test_webhook.py
+++ b/promgen/tests/notification/test_webhook.py
@@ -3,9 +3,8 @@
 
 from unittest import mock
 
-from requests.exceptions import RequestException
-
 from django.test import override_settings
+from requests.exceptions import RequestException
 
 from promgen import models, rest, tests
 from promgen.notification.webhook import NotificationWebhook
diff --git a/promgen/tests/test_alert_rules.py b/promgen/tests/test_alert_rules.py
index bab402058..597360461 100644
--- a/promgen/tests/test_alert_rules.py
+++ b/promgen/tests/test_alert_rules.py
@@ -22,9 +22,7 @@
     for: 1s
     labels:
       severity: high
-""".lstrip().encode(
-    "utf-8"
-)
+""".lstrip().encode("utf-8")
 
 TEST_SETTINGS = tests.Data("examples", "promgen.yml").yaml()
 
diff --git a/promgen/tests/test_routes.py b/promgen/tests/test_routes.py
index dfa0befd8..84d19000b 100644
--- a/promgen/tests/test_routes.py
+++ b/promgen/tests/test_routes.py
@@ -3,7 +3,6 @@
 from unittest import mock
 
 import requests
-
 from django.test import override_settings
 from django.urls import reverse
 
diff --git a/promgen/tests/test_silence.py b/promgen/tests/test_silence.py
index 9a76ac034..fa94769a5 100644
--- a/promgen/tests/test_silence.py
+++ b/promgen/tests/test_silence.py
@@ -7,7 +7,7 @@
 from django.test import override_settings
 from django.urls import reverse
 
-from promgen import forms, tests, errors
+from promgen import errors, forms, tests
 
 TEST_SETTINGS = tests.Data("examples", "promgen.yml").yaml()
 TEST_DURATION = tests.Data("examples", "silence.duration.json").json()
@@ -41,9 +41,7 @@ def test_duration(self, mock_post):
                 },
                 content_type="application/json",
             )
-        mock_post.assert_called_with(
-            "http://alertmanager:9093/api/v2/silences", json=TEST_DURATION
-        )
+        mock_post.assert_called_with("http://alertmanager:9093/api/v2/silences", json=TEST_DURATION)
 
     @override_settings(PROMGEN=TEST_SETTINGS)
     @mock.patch("promgen.util.post")
@@ -62,9 +60,7 @@ def test_range(self, mock_post):
                 content_type="application/json",
             )
 
-        mock_post.assert_called_with(
-            "http://alertmanager:9093/api/v2/silences", json=TEST_RANGE
-        )
+        mock_post.assert_called_with("http://alertmanager:9093/api/v2/silences", json=TEST_RANGE)
 
     @override_settings(PROMGEN=TEST_SETTINGS)
     def test_site_silence_errors(self):
diff --git a/promgen/urls.py b/promgen/urls.py
index eaeeed625..aec8bc576 100644
--- a/promgen/urls.py
+++ b/promgen/urls.py
@@ -16,12 +16,11 @@
     1. Import the include() function: from django.conf.urls import url, include
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
-from rest_framework import routers
-
 from django.conf.urls import url
 from django.contrib import admin
 from django.urls import include, path
 from django.views.decorators.csrf import csrf_exempt
+from rest_framework import routers
 
 from promgen import proxy, rest, views
 
diff --git a/promgen/util.py b/promgen/util.py
index f594f2862..20642d349 100644
--- a/promgen/util.py
+++ b/promgen/util.py
@@ -5,11 +5,9 @@
 from urllib.parse import urlsplit
 
 import requests
-
 from django.conf import settings
 from django.db.models import F
 
-
 # Wrappers around request api to ensure we always attach our user agent
 # https://github.com/requests/requests/blob/master/requests/api.py
 
diff --git a/promgen/validators.py b/promgen/validators.py
index 7703f61e5..d1c4eaa1a 100644
--- a/promgen/validators.py
+++ b/promgen/validators.py
@@ -4,7 +4,6 @@
 import re
 
 from dateutil import parser
-
 from django.core.exceptions import ValidationError
 from django.core.validators import RegexValidator, URLValidator
 
diff --git a/promgen/views.py b/promgen/views.py
index a11d0caa9..32909654f 100644
--- a/promgen/views.py
+++ b/promgen/views.py
@@ -12,22 +12,6 @@
 
 import prometheus_client
 import requests
-from prometheus_client.core import CounterMetricFamily, GaugeMetricFamily
-
-import promgen.templatetags.promgen as macro
-from promgen import (
-    discovery,
-    forms,
-    mixins,
-    models,
-    plugins,
-    prometheus,
-    signals,
-    tasks,
-    util,
-)
-from promgen.shortcuts import resolve_domain
-
 from django.conf import settings
 from django.contrib import messages
 from django.contrib.auth.mixins import LoginRequiredMixin
@@ -43,6 +27,21 @@
 from django.views.generic.base import RedirectView, TemplateView
 from django.views.generic.detail import SingleObjectMixin
 from django.views.generic.edit import CreateView, DeleteView, FormView
+from prometheus_client.core import CounterMetricFamily, GaugeMetricFamily
+
+import promgen.templatetags.promgen as macro
+from promgen import (
+    discovery,
+    forms,
+    mixins,
+    models,
+    plugins,
+    prometheus,
+    signals,
+    tasks,
+    util,
+)
+from promgen.shortcuts import resolve_domain
 
 logger = logging.getLogger(__name__)
 
diff --git a/pyproject.toml b/pyproject.toml
index e62470332..2d6457ec5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ Tracker = "https://github.com/line/promgen/issues"
 Documentation = "https://line.github.io/promgen/"
 
 [project.optional-dependencies]
-dev = ["black", "codecov", "flake8", "unittest-xml-reporting"]
+dev = ["codecov", "flake8", "unittest-xml-reporting"]
 docs = ["Sphinx", "sphinxcontrib-httpdomain"]
 mysql = ["mysqlclient"]
 
@@ -61,25 +61,25 @@ slack = "promgen.notification.slack:NotificationSlack"
 user = "promgen.notification.user:NotificationUser"
 webhook = "promgen.notification.webhook:NotificationWebhook"
 
-[tool.black]
+[tool.ruff]
 line-length = 100
-target-version = ['py39']
-extend-exclude = '''
-(
-promgen/migrations
-|promgen/urls.py
-)
-'''
 
-[tool.ruff]
+[tool.ruff.lint]
 ignore = [
     'E741', # Ambiguous variable name
-    'E501', # Let black handle line-length
+    'E501', # We let the formatter fix line length but don't want to be warned
+]
+
+select = ["E", "F", 'I']
+
+[tool.ruff.format]
+exclude = [
+    "promgen/migrations/*",
+    "promgen/urls.py",
 ]
 
-[tool.ruff.isort]
+[tool.ruff.lint.isort]
 known-first-party = ["promgen"]
-forced-separate = ["django"]
 
 [tool.codespell]
 skip = '*.min.js,*.min.css,*.css.map,.venv,dist,.git'