diff --git a/categories/migrations/0001_initial.py b/categories/migrations/0001_initial.py
index 23afb6a8..3a8d8bd6 100644
--- a/categories/migrations/0001_initial.py
+++ b/categories/migrations/0001_initial.py
@@ -4,7 +4,6 @@
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("contenttypes", "0001_initial"),
     ]
diff --git a/categories/migrations/0002_auto_20170217_1111.py b/categories/migrations/0002_auto_20170217_1111.py
index 38c1f4fd..7da03f5d 100644
--- a/categories/migrations/0002_auto_20170217_1111.py
+++ b/categories/migrations/0002_auto_20170217_1111.py
@@ -6,7 +6,6 @@
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("categories", "0001_initial"),
     ]
diff --git a/categories/migrations/0003_auto_20200306_1050.py b/categories/migrations/0003_auto_20200306_1050.py
index 21d98a3d..0d71e229 100644
--- a/categories/migrations/0003_auto_20200306_1050.py
+++ b/categories/migrations/0003_auto_20200306_1050.py
@@ -5,7 +5,6 @@
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("contenttypes", "0002_remove_content_type_name"),
         ("categories", "0002_auto_20170217_1111"),
diff --git a/categories/migrations/0004_auto_20200517_1832.py b/categories/migrations/0004_auto_20200517_1832.py
index dcbde230..02b08522 100644
--- a/categories/migrations/0004_auto_20200517_1832.py
+++ b/categories/migrations/0004_auto_20200517_1832.py
@@ -5,7 +5,6 @@
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("contenttypes", "0002_remove_content_type_name"),
         ("categories", "0003_auto_20200306_1050"),
diff --git a/categories/tests/test_models.py b/categories/tests/test_models.py
index 5208bafc..ed5d0d08 100644
--- a/categories/tests/test_models.py
+++ b/categories/tests/test_models.py
@@ -9,7 +9,6 @@
 
 class TestCategoryThumbnail(TestCase):
     def test_thumbnail(self):
-
         file_name = "test_image.jpg"
 
         with open(os.path.join(os.path.dirname(__file__), file_name), "rb") as f:
diff --git a/categories/tests/test_templatetags.py b/categories/tests/test_templatetags.py
index 2d419a31..abc606cf 100644
--- a/categories/tests/test_templatetags.py
+++ b/categories/tests/test_templatetags.py
@@ -7,7 +7,6 @@
 
 
 class CategoryTagsTest(TestCase):
-
     fixtures = ["musicgenres.json"]
 
     def render_template(self, template_string, context={}):
diff --git a/example/simpletext/migrations/0001_initial.py b/example/simpletext/migrations/0001_initial.py
index fe231e1f..825c65e6 100644
--- a/example/simpletext/migrations/0001_initial.py
+++ b/example/simpletext/migrations/0001_initial.py
@@ -7,7 +7,6 @@
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = []
diff --git a/example/simpletext/migrations/0002_auto_20171204_0721.py b/example/simpletext/migrations/0002_auto_20171204_0721.py
index 6ce4e0a1..8ca03c62 100644
--- a/example/simpletext/migrations/0002_auto_20171204_0721.py
+++ b/example/simpletext/migrations/0002_auto_20171204_0721.py
@@ -7,7 +7,6 @@
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("categories", "0002_auto_20170217_1111"),
         ("simpletext", "0001_initial"),
diff --git a/example/simpletext/migrations/0003_auto_20200306_0928.py b/example/simpletext/migrations/0003_auto_20200306_0928.py
index a33be27c..bd605bd2 100644
--- a/example/simpletext/migrations/0003_auto_20200306_0928.py
+++ b/example/simpletext/migrations/0003_auto_20200306_0928.py
@@ -4,7 +4,6 @@
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("simpletext", "0002_auto_20171204_0721"),
     ]