diff --git a/graphene/types/tests/test_datetime.py b/graphene/types/tests/test_datetime.py
index 5d4cb604..90f7a676 100644
--- a/graphene/types/tests/test_datetime.py
+++ b/graphene/types/tests/test_datetime.py
@@ -226,6 +226,7 @@ def test_time_query_variable(sample_time):
     assert not result.errors
     assert result.data == {"time": isoformat}
 
+
 def test_support_isoformat():
     isoformat = 20111104
 
@@ -244,6 +245,7 @@ def test_support_isoformat():
     assert not result.errors
     assert result.data == {"time": isoformat}
 
+
 def test_bad_variables(sample_date, sample_datetime, sample_time):
     def _test_bad_variables(type_, input_):
         result = schema.execute(
diff --git a/setup.py b/setup.py
index b8db0e0c..1b0762bb 100644
--- a/setup.py
+++ b/setup.py
@@ -83,8 +83,8 @@ setup(
     install_requires=[
         "graphql-core>=3.1,<3.3",
         "graphql-relay>=3.1,<3.3",
+        "python-dateutil>=2.7.0,<3",
         "typing-extensions>=4.7.1,<5",
-        "python-dateutil>=2.7.0,<3"
     ],
     tests_require=tests_require,
     extras_require={"test": tests_require, "dev": dev_requires},