diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,4 +1,4 @@
 # Add here internal Software Heritage dependencies, one per line.
 swh.core[http] >= 0.3
-swh.objstorage >= 0.2.1
+swh.objstorage >= 0.2.2
 swh.journal >= 0.4.2
diff --git a/swh/objstorage/replayer/replay.py b/swh/objstorage/replayer/replay.py
--- a/swh/objstorage/replayer/replay.py
+++ b/swh/objstorage/replayer/replay.py
@@ -206,8 +206,8 @@
     Example:
 
     >>> from swh.objstorage.factory import get_objstorage
-    >>> src = get_objstorage('memory', {})
-    >>> dst = get_objstorage('memory', {})
+    >>> src = get_objstorage('memory')
+    >>> dst = get_objstorage('memory')
     >>> id1 = src.add(b'foo bar')
     >>> id2 = src.add(b'baz qux')
     >>> kafka_partitions = {
diff --git a/swh/objstorage/replayer/tests/test_replay.py b/swh/objstorage/replayer/tests/test_replay.py
--- a/swh/objstorage/replayer/tests/test_replay.py
+++ b/swh/objstorage/replayer/tests/test_replay.py
@@ -37,8 +37,8 @@
 
 
 def test_replay_content(kafka_server, kafka_prefix, kafka_consumer_group):
-    objstorage1 = get_objstorage(cls="memory", args={})
-    objstorage2 = get_objstorage(cls="memory", args={})
+    objstorage1 = get_objstorage(cls="memory")
+    objstorage2 = get_objstorage(cls="memory")
 
     writer = KafkaJournalWriter(
         brokers=[kafka_server],