diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 81d7537..cabc48c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,9 +12,10 @@ jobs:
           - "3.8"
           - "3.9"
           - "3.10"
+          - "3.11"
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
@@ -53,4 +54,4 @@ jobs:
         coverage xml
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v2
+      uses: codecov/codecov-action@v3
diff --git a/content_disposition/__init__.py b/content_disposition/__init__.py
index e69de29..d7c1691 100644
--- a/content_disposition/__init__.py
+++ b/content_disposition/__init__.py
@@ -0,0 +1 @@
+from .content_disposition import *
diff --git a/content_disposition/content_disposition.py b/content_disposition/content_disposition.py
index 1b57ec3..a555cfa 100755
--- a/content_disposition/content_disposition.py
+++ b/content_disposition/content_disposition.py
@@ -2,6 +2,10 @@
 import unicodedata
 from urllib.parse import quote
 
+__all__ = [
+    "rfc5987_content_disposition",
+]
+
 
 def rfc5987_content_disposition(file_name, disposition_type="inline"):
     """
@@ -11,9 +15,7 @@ def rfc5987_content_disposition(file_name, disposition_type="inline"):
     :param disposition_type: str
     :return:
     """
-    ascii_name = (
-        unicodedata.normalize("NFKD", file_name).encode("ascii", "ignore").decode()
-    )
+    ascii_name = unicodedata.normalize("NFKD", file_name).encode("ascii", "ignore").decode()
     header = '{}; filename="{}"'.format(disposition_type, ascii_name)
     if ascii_name != file_name:
         quoted_name = quote(file_name)
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..74ca983
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,9 @@
+[tool.black]
+line-length = 120
+target-version = ['py39']
+exclude = '''
+/(
+    manage.py
+  | migrations
+)/
+'''
diff --git a/tests/testapp/views.py b/tests/testapp/views.py
index 656cd36..11904c1 100644
--- a/tests/testapp/views.py
+++ b/tests/testapp/views.py
@@ -2,7 +2,7 @@
 from rest_framework import viewsets
 from rest_framework.decorators import action
 
-from content_disposition.content_disposition import rfc5987_content_disposition
+from content_disposition import rfc5987_content_disposition
 
 from .models import Photo
 from .serializers import PhotoSerializer
@@ -30,8 +30,6 @@ def download_route(self, request, pk=None):
             open(instance.file.path, "rb").read(),
             content_type=instance.mime,
         )
-        response["Content-Disposition"] = rfc5987_content_disposition(
-            instance.file.name
-        )
+        response["Content-Disposition"] = rfc5987_content_disposition(instance.file.name)
 
         return response