diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..02896a1
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,17 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+insert_final_newline = true
+max_line_length = 80
+trim_trailing_whitespace = true
+
+[*.{html,css,js,json,xml,yaml,yml}]
+indent_size = 2
+
+[*.{md,ps1,sh,py,rst}]
+indent_size = 4
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 9fac042..b6745fa 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -89,6 +89,9 @@ stages:
     - script: flake8 .
       displayName: 'CR-QC: Static analysis (flake8)'
 
+    - script: black --check .
+      displayName: 'CR-QC: Format check'
+
     - script: mypy .
       displayName: 'CR-QC: Type check (mypy)'
 
diff --git a/django_sass/__init__.py b/django_sass/__init__.py
index df40a21..eed258c 100644
--- a/django_sass/__init__.py
+++ b/django_sass/__init__.py
@@ -38,8 +38,14 @@ def find_static_scss() -> List[str]:
     return scss_files
 
 
-def compile_sass(inpath: str, outpath: str, output_style: str = None, precision: int = None,
-                 source_map: bool = False, include_paths: List[str] = None) -> None:
+def compile_sass(
+    inpath: str,
+    outpath: str,
+    output_style: str = None,
+    precision: int = None,
+    source_map: bool = False,
+    include_paths: List[str] = None,
+) -> None:
     """
     Calls sass.compile() within context of Django's known static file paths,
     and writes output CSS and/or sourcemaps to file.
diff --git a/django_sass/apps.py b/django_sass/apps.py
index d0c0d32..c14ae0f 100644
--- a/django_sass/apps.py
+++ b/django_sass/apps.py
@@ -2,4 +2,4 @@
 
 
 class DjangoSassConfig(AppConfig):
-    name = 'django_sass'
+    name = "django_sass"
diff --git a/django_sass/management/commands/sass.py b/django_sass/management/commands/sass.py
index d6238d7..566376a 100644
--- a/django_sass/management/commands/sass.py
+++ b/django_sass/management/commands/sass.py
@@ -95,7 +95,9 @@ def handle(self, *args, **options) -> None:
                                 precision=o_precision,
                                 source_map=o_srcmap,
                             )
-                            self.stdout.write("Updated files at %s" % time.time())
+                            self.stdout.write(
+                                "Updated files at %s" % time.time()
+                            )
                         except sass.CompileError as exc:
                             self.stdout.write(str(exc))
 
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..24b9307
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,9 @@
+[tool.black]
+line-length = 80
+target-version = ['py36', 'py37', 'py38']
+# Regular expression of files to exclude.
+exclude = '''
+/(
+    migrations
+)/
+'''
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 04040a6..42a3c6e 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,5 @@
 -e ./
+black
 flake8
 mypy
 pytest
diff --git a/setup.py b/setup.py
index 16244c7..5e88b2c 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,9 @@
 from setuptools import setup, find_packages
 
 
-with open(os.path.join(os.path.dirname(__file__), "README.md"), encoding="utf8") as readme:
+with open(
+    os.path.join(os.path.dirname(__file__), "README.md"), encoding="utf8"
+) as readme:
     README = readme.read()
 
 setup(
@@ -11,8 +13,10 @@
     author="CodeRed LLC",
     author_email="info@coderedcorp.com",
     url="https://github.com/coderedcorp/django-sass",
-    description=("The absolute simplest way to use Sass with Django. Pure Python, "
-                 "minimal dependencies, and no special configuration required!"),
+    description=(
+        "The absolute simplest way to use Sass with Django. Pure Python, "
+        "minimal dependencies, and no special configuration required!"
+    ),
     long_description=README,
     long_description_content_type="text/markdown",
     license="BSD license",
diff --git a/testproject/app1/apps.py b/testproject/app1/apps.py
index 1824a7b..708ee94 100644
--- a/testproject/app1/apps.py
+++ b/testproject/app1/apps.py
@@ -2,4 +2,4 @@
 
 
 class App1Config(AppConfig):
-    name = 'app1'
+    name = "app1"
diff --git a/testproject/app2/apps.py b/testproject/app2/apps.py
index 008e3c5..8ecc489 100644
--- a/testproject/app2/apps.py
+++ b/testproject/app2/apps.py
@@ -2,4 +2,4 @@
 
 
 class App2Config(AppConfig):
-    name = 'app2'
+    name = "app2"
diff --git a/testproject/manage.py b/testproject/manage.py
index fb52456..ee87d59 100644
--- a/testproject/manage.py
+++ b/testproject/manage.py
@@ -5,7 +5,7 @@
 
 
 def main():
-    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'testproject.settings')
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "testproject.settings")
     try:
         from django.core.management import execute_from_command_line
     except ImportError as exc:
@@ -17,5 +17,5 @@ def main():
     execute_from_command_line(sys.argv)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     main()
diff --git a/testproject/testproject/settings.py b/testproject/testproject/settings.py
index d5ea872..520873b 100644
--- a/testproject/testproject/settings.py
+++ b/testproject/testproject/settings.py
@@ -21,7 +21,7 @@
 # See https://docs.djangoproject.com/en/2.2/howto/deployment/checklist/
 
 # SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = '-_wl=tq26(*wyvfza+ncg_436c53pu81d=07j62+vm5y2pc)f^'
+SECRET_KEY = "-_wl=tq26(*wyvfza+ncg_436c53pu81d=07j62+vm5y2pc)f^"
 
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = True
@@ -32,56 +32,55 @@
 # Application definition
 
 INSTALLED_APPS = [
-    'app1',
-    'app2',
-    'django_sass',
-
-    'django.contrib.admin',
-    'django.contrib.auth',
-    'django.contrib.contenttypes',
-    'django.contrib.sessions',
-    'django.contrib.messages',
-    'django.contrib.staticfiles',
+    "app1",
+    "app2",
+    "django_sass",
+    "django.contrib.admin",
+    "django.contrib.auth",
+    "django.contrib.contenttypes",
+    "django.contrib.sessions",
+    "django.contrib.messages",
+    "django.contrib.staticfiles",
 ]
 
 MIDDLEWARE = [
-    'django.middleware.security.SecurityMiddleware',
-    'django.contrib.sessions.middleware.SessionMiddleware',
-    'django.middleware.common.CommonMiddleware',
-    'django.middleware.csrf.CsrfViewMiddleware',
-    'django.contrib.auth.middleware.AuthenticationMiddleware',
-    'django.contrib.messages.middleware.MessageMiddleware',
-    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+    "django.middleware.security.SecurityMiddleware",
+    "django.contrib.sessions.middleware.SessionMiddleware",
+    "django.middleware.common.CommonMiddleware",
+    "django.middleware.csrf.CsrfViewMiddleware",
+    "django.contrib.auth.middleware.AuthenticationMiddleware",
+    "django.contrib.messages.middleware.MessageMiddleware",
+    "django.middleware.clickjacking.XFrameOptionsMiddleware",
 ]
 
-ROOT_URLCONF = 'testproject.urls'
+ROOT_URLCONF = "testproject.urls"
 
 TEMPLATES = [
     {
-        'BACKEND': 'django.template.backends.django.DjangoTemplates',
-        'DIRS': [],
-        'APP_DIRS': True,
-        'OPTIONS': {
-            'context_processors': [
-                'django.template.context_processors.debug',
-                'django.template.context_processors.request',
-                'django.contrib.auth.context_processors.auth',
-                'django.contrib.messages.context_processors.messages',
+        "BACKEND": "django.template.backends.django.DjangoTemplates",
+        "DIRS": [],
+        "APP_DIRS": True,
+        "OPTIONS": {
+            "context_processors": [
+                "django.template.context_processors.debug",
+                "django.template.context_processors.request",
+                "django.contrib.auth.context_processors.auth",
+                "django.contrib.messages.context_processors.messages",
             ],
         },
     },
 ]
 
-WSGI_APPLICATION = 'testproject.wsgi.application'
+WSGI_APPLICATION = "testproject.wsgi.application"
 
 
 # Database
 # https://docs.djangoproject.com/en/2.2/ref/settings/#databases
 
 DATABASES = {
-    'default': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
+    "default": {
+        "ENGINE": "django.db.backends.sqlite3",
+        "NAME": os.path.join(BASE_DIR, "db.sqlite3"),
     }
 }
 
@@ -89,9 +88,9 @@
 # Internationalization
 # https://docs.djangoproject.com/en/2.2/topics/i18n/
 
-LANGUAGE_CODE = 'en-us'
+LANGUAGE_CODE = "en-us"
 
-TIME_ZONE = 'UTC'
+TIME_ZONE = "UTC"
 
 USE_I18N = True
 
@@ -103,4 +102,4 @@
 # Static files (CSS, JavaScript, Images)
 # https://docs.djangoproject.com/en/2.2/howto/static-files/
 
-STATIC_URL = '/static/'
+STATIC_URL = "/static/"
diff --git a/testproject/testproject/urls.py b/testproject/testproject/urls.py
index 0c86156..919da34 100644
--- a/testproject/testproject/urls.py
+++ b/testproject/testproject/urls.py
@@ -17,5 +17,5 @@
 from django.urls import path
 
 urlpatterns = [
-    path('admin/', admin.site.urls),
+    path("admin/", admin.site.urls),
 ]
diff --git a/testproject/testproject/wsgi.py b/testproject/testproject/wsgi.py
index bee623a..2b24860 100644
--- a/testproject/testproject/wsgi.py
+++ b/testproject/testproject/wsgi.py
@@ -11,6 +11,6 @@
 
 from django.core.wsgi import get_wsgi_application
 
-os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'testproject.settings')
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "testproject.settings")
 
 application = get_wsgi_application()
diff --git a/testproject/tests.py b/testproject/tests.py
index 78a1e87..ee8779c 100644
--- a/testproject/tests.py
+++ b/testproject/tests.py
@@ -11,7 +11,6 @@
 
 
 class TestDjangoSass(unittest.TestCase):
-
     def setUp(self):
         self.outdir = os.path.join(THIS_DIR, "out")
 
@@ -29,7 +28,9 @@ def assert_output(self, real_outpath: str):
             contents = f.read()
             self.assertTrue("/* Tests: app1/scss/_include.scss */" in contents)
             self.assertTrue("/* Tests: app2/scss/_samedir.scss */" in contents)
-            self.assertTrue("/* Tests: app2/scss/subdir/_subdir.scss */" in contents)
+            self.assertTrue(
+                "/* Tests: app2/scss/subdir/_subdir.scss */" in contents
+            )
             self.assertTrue("/* Tests: app2/scss/test.scss */" in contents)
 
     def test_find_static_paths(self):
@@ -42,14 +43,35 @@ def test_find_static_sass(self):
         files = find_static_scss()
         # Assert that it found all of our scss files.
         self.assertTrue(
-            os.path.join(THIS_DIR, "app1", "static", "app1", "scss", "_include.scss") in files)
+            os.path.join(
+                THIS_DIR, "app1", "static", "app1", "scss", "_include.scss"
+            )
+            in files
+        )
         self.assertTrue(
-            os.path.join(THIS_DIR, "app2", "static", "app2", "scss", "_samedir.scss") in files)
+            os.path.join(
+                THIS_DIR, "app2", "static", "app2", "scss", "_samedir.scss"
+            )
+            in files
+        )
         self.assertTrue(
-            os.path.join(THIS_DIR, "app2", "static", "app2", "scss", "test.scss") in files)
+            os.path.join(
+                THIS_DIR, "app2", "static", "app2", "scss", "test.scss"
+            )
+            in files
+        )
         self.assertTrue(
-            os.path.join(THIS_DIR, "app2", "static", "app2", "scss", "subdir", "_subdir.scss")
-            in files)
+            os.path.join(
+                THIS_DIR,
+                "app2",
+                "static",
+                "app2",
+                "scss",
+                "subdir",
+                "_subdir.scss",
+            )
+            in files
+        )
 
     def test_cli(self):
         # Input and output paths relative to django static dirs.
@@ -91,7 +113,9 @@ def test_cli_srcmap(self):
         self.assertEqual(proc.returncode, 0)
         # Assert output is correct.
         self.assert_output(outpath)
-        self.assertTrue(os.path.isfile(os.path.join(self.outdir, "test.css.map")))
+        self.assertTrue(
+            os.path.isfile(os.path.join(self.outdir, "test.css.map"))
+        )
 
     @unittest.skip("Test needs fixed...")
     def test_cli_watch(self):