diff --git a/pandas_gbq/schema/pyarrow_to_bigquery.py b/pandas_gbq/schema/pyarrow_to_bigquery.py
index 789cd46e..392c7496 100644
--- a/pandas_gbq/schema/pyarrow_to_bigquery.py
+++ b/pandas_gbq/schema/pyarrow_to_bigquery.py
@@ -78,8 +78,12 @@ def arrow_type_to_bigquery_field(
     return None
 
 
-def arrow_list_type_to_bigquery(name, type_, default_type="STRING") -> Optional[schema.SchemaField]:
-    inner_field = arrow_type_to_bigquery_field(name, type_.value_type, default_type=default_type)
+def arrow_list_type_to_bigquery(
+    name, type_, default_type="STRING"
+) -> Optional[schema.SchemaField]:
+    inner_field = arrow_type_to_bigquery_field(
+        name, type_.value_type, default_type=default_type
+    )
     if inner_field is None:
         return None
 
diff --git a/tests/unit/schema/test_pyarrow_to_bigquery.py b/tests/unit/schema/test_pyarrow_to_bigquery.py
index 07f14611..dc5504f9 100644
--- a/tests/unit/schema/test_pyarrow_to_bigquery.py
+++ b/tests/unit/schema/test_pyarrow_to_bigquery.py
@@ -42,16 +42,14 @@ def test_arrow_type_to_bigquery_field_scalar_types(pyarrow_type, bigquery_type):
 
 
 def test_arrow_type_to_bigquery_field_unknown():
-    assert (
-        pyarrow_to_bigquery.arrow_type_to_bigquery_field("test_name", pyarrow.null(), default_type="DEFAULT_TYPE")
-        == bigquery.SchemaField("test_name", "DEFAULT_TYPE")
-    )
+    assert pyarrow_to_bigquery.arrow_type_to_bigquery_field(
+        "test_name", pyarrow.null(), default_type="DEFAULT_TYPE"
+    ) == bigquery.SchemaField("test_name", "DEFAULT_TYPE")
 
 
 def test_arrow_type_to_bigquery_field_list_of_unknown():
-    assert (
-        pyarrow_to_bigquery.arrow_type_to_bigquery_field(
-            "test_name", pyarrow.list_(pyarrow.null()), default_type="DEFAULT_TYPE",
-        )
-        == bigquery.SchemaField("test_name", "DEFAULT_TYPE", mode="REPEATED")
-    )
+    assert pyarrow_to_bigquery.arrow_type_to_bigquery_field(
+        "test_name",
+        pyarrow.list_(pyarrow.null()),
+        default_type="DEFAULT_TYPE",
+    ) == bigquery.SchemaField("test_name", "DEFAULT_TYPE", mode="REPEATED")