diff --git a/pubtools/_pulp/tasks/garbage_collect.py b/pubtools/_pulp/tasks/garbage_collect.py
index 84cf4129..87cc5403 100644
--- a/pubtools/_pulp/tasks/garbage_collect.py
+++ b/pubtools/_pulp/tasks/garbage_collect.py
@@ -11,8 +11,7 @@
 LOG = logging.getLogger("pubtools.pulp")
 step = PulpTask.step
 
-UNASSOCIATE_BATCH_LIMIT = int(
-    os.getenv("PULP_GC_UNASSOCIATE_BATCH_LIMIT", "10000"))
+UNASSOCIATE_BATCH_LIMIT = int(os.getenv("PULP_GC_UNASSOCIATE_BATCH_LIMIT", "10000"))
 
 
 class GarbageCollect(PulpClientService, PulpTask):
@@ -98,8 +97,7 @@ def clean_all_rpm_content(self):
             Criteria.with_unit_type(RpmUnit, unit_fields=["unit_id"]),
             Criteria.with_field(
                 "cdn_published",
-                Matcher.less_than(
-                    datetime.utcnow() - timedelta(days=arc_threshold)),
+                Matcher.less_than(datetime.utcnow() - timedelta(days=arc_threshold)),
             ),
         )
 
@@ -109,8 +107,10 @@ def clean_all_rpm_content(self):
             LOG.info("No all-rpm-content found older than %s", arc_threshold)
             return
 
-        unit_batches = [units[i:i + UNASSOCIATE_BATCH_LIMIT] for i in
-                   range(0, len(units), UNASSOCIATE_BATCH_LIMIT)]
+        unit_batches = [
+            units[i : i + UNASSOCIATE_BATCH_LIMIT]
+            for i in range(0, len(units), UNASSOCIATE_BATCH_LIMIT)
+        ]
         for batch in unit_batches:
             LOG.info("Submitting batch for deletion")
             deletion_criteria = Criteria.and_(
@@ -121,8 +121,7 @@ def clean_all_rpm_content(self):
                 ),
             )
             LOG.debug("Submitting batch for deletion")
-            deletion_task = arc_repo.remove_content(
-                criteria=deletion_criteria).result()
+            deletion_task = arc_repo.remove_content(criteria=deletion_criteria).result()
             for task in deletion_task:
                 if task.repo_id == "all-rpm-content":
                     for unit in task.units:
diff --git a/tests/garbage_collect/test_garbage_collect.py b/tests/garbage_collect/test_garbage_collect.py
index 1710d84a..9a6fdfae 100644
--- a/tests/garbage_collect/test_garbage_collect.py
+++ b/tests/garbage_collect/test_garbage_collect.py
@@ -235,7 +235,6 @@ def test_arc_garbage_collect(mock_logger):
     mock_logger.info.assert_any_call("Old all-rpm-content deleted: %s", rpm2.name)
 
 
-
 def test_arc_garbage_collect_in_batches(mock_logger):
     """deletes relevant all-rpm-content content in batches"""
     os.environ["PUBTOOLS_PULPLIB_PAGE_SIZE"] = "5"
@@ -248,27 +247,32 @@ def test_arc_garbage_collect_in_batches(mock_logger):
     assert list(client.search_content()) == []
 
     all_rpm_content = client.get_repository("all-rpm-content").result()
-    new_rpms = [RpmUnit(
-        cdn_published=datetime.datetime.utcnow(),
-        arch="src",
-        filename="test-arc-new%02d-1.0-1.src.rpm" % i,
-        name="test-arc-new%02d" % i,
-        version="1.0",
-        release="1",
-        content_type_id="rpm",
-        unit_id="gc_arc_new%02d" % i,
-    ) for i in range(0, 10)]
-    old_rpms = [RpmUnit(
-        cdn_published=datetime.datetime.utcnow() - datetime.timedelta(
-            days=190),
-        arch="src",
-        filename="test-arc-old%02d-1.0-1.src.rpm" % i,
-        name="test-arc-old%02d" % i,
-        version="1.0",
-        release="1",
-        content_type_id="rpm",
-        unit_id="gc_arc_old%02d" % i,
-    ) for i in range(0, 23)]
+    new_rpms = [
+        RpmUnit(
+            cdn_published=datetime.datetime.utcnow(),
+            arch="src",
+            filename="test-arc-new%02d-1.0-1.src.rpm" % i,
+            name="test-arc-new%02d" % i,
+            version="1.0",
+            release="1",
+            content_type_id="rpm",
+            unit_id="gc_arc_new%02d" % i,
+        )
+        for i in range(0, 10)
+    ]
+    old_rpms = [
+        RpmUnit(
+            cdn_published=datetime.datetime.utcnow() - datetime.timedelta(days=190),
+            arch="src",
+            filename="test-arc-old%02d-1.0-1.src.rpm" % i,
+            name="test-arc-old%02d" % i,
+            version="1.0",
+            release="1",
+            content_type_id="rpm",
+            unit_id="gc_arc_old%02d" % i,
+        )
+        for i in range(0, 23)
+    ]
 
     controller.insert_units(all_rpm_content, new_rpms + old_rpms)
     updated_rpm = list(client.get_repository("all-rpm-content").search_content())
@@ -281,8 +285,16 @@ def test_arc_garbage_collect_in_batches(mock_logger):
             gc.main()
     updated_rpm = list(client.get_repository("all-rpm-content").search_content())
     assert len(updated_rpm) == 10
-    assert len([call for call in mock_logger.debug.call_args_list
-                if 'Submitting batch for deletion' in call.args]) == 5
+    assert (
+        len(
+            [
+                call
+                for call in mock_logger.debug.call_args_list
+                if "Submitting batch for deletion" in call.args
+            ]
+        )
+        == 5
+    )
 
 
 def test_arc_garbage_collect_0items(mock_logger):