diff --git a/docs/dev-info.rst b/docs/dev-info.rst
--- a/docs/dev-info.rst
+++ b/docs/dev-info.rst
@@ -45,18 +45,15 @@
     # storage to read sha1's metadata (path)
   	# storage:
   	#   cls: local
-  	#   args:
-  	#     db: "service=swh-dev"
-  	#     objstorage:
-  	#       cls: pathslicing
-  	#       args:
-  	#         root: /home/storage/swh-storage/
-  	#         slicing: 0:1/1:5
+  	#   db: "service=swh-dev"
+  	#   objstorage:
+  	#     cls: pathslicing
+  	#     root: /home/storage/swh-storage/
+  	#     slicing: 0:1/1:5
 
   	storage:
   	  cls: remote
-  	  args:
-  	    url: http://localhost:5002/
+	    url: http://localhost:5002/
 
   	indexer_storage:
   	  cls: remote
@@ -68,9 +65,8 @@
   	# locally: this needs to match your storage's setup
   	objstorage:
   	  cls: pathslicing
-  	  args:
-  	    slicing: 0:1/1:5
-  	    root: /home/storage/swh-storage/
+	    slicing: 0:1/1:5
+ 	    root: /home/storage/swh-storage/
 
   	destination_task: swh.indexer.tasks.SWHOrchestratorTextContentsTask
   	rescheduling_task: swh.indexer.tasks.SWHContentMimetypeTask
@@ -84,13 +80,11 @@
     # storage to read sha1's metadata (path)
   	# storage:
   	#   cls: local
-  	#   args:
-  	#     db: "service=swh-dev"
-  	#     objstorage:
-  	#       cls: pathslicing
-  	#       args:
-  	#         root: /home/storage/swh-storage/
-  	#         slicing: 0:1/1:5
+  	#   db: "service=swh-dev"
+  	#   objstorage:
+  	#     cls: pathslicing
+  	#     root: /home/storage/swh-storage/
+  	#     slicing: 0:1/1:5
 
   	storage:
   	  cls: remote
@@ -106,9 +100,8 @@
   	# locally: this needs to match your storage's setup
   	objstorage:
   	  cls: pathslicing
-  	  args:
-  	    slicing: 0:1/1:5
-  	    root: /home/storage/swh-storage/
+	    slicing: 0:1/1:5
+	    root: /home/storage/swh-storage/
 
   	workdir: /tmp/swh/worker.indexer/license/
 
diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,6 +1,6 @@
 swh.core[db,http] >= 0.3
 swh.model >= 0.0.15
-swh.objstorage >= 0.0.43
+swh.objstorage >= 0.2.2
 swh.scheduler >= 0.5.2
 swh.storage >= 0.12.0
 swh.journal >= 0.1.0
diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
-vcversioner
 click
 python-magic >= 0.4.13
 pyld
diff --git a/swh/indexer/cli.py b/swh/indexer/cli.py
--- a/swh/indexer/cli.py
+++ b/swh/indexer/cli.py
@@ -40,7 +40,7 @@
 
 def _get_api(getter, config, config_key, url):
     if url:
-        config[config_key] = {"cls": "remote", "args": {"url": url}}
+        config[config_key] = {"cls": "remote", "url": url}
     elif config_key not in config:
         raise click.ClickException("Missing configuration for {}".format(config_key))
     return getter(**config[config_key])
diff --git a/swh/indexer/indexer.py b/swh/indexer/indexer.py
--- a/swh/indexer/indexer.py
+++ b/swh/indexer/indexer.py
@@ -158,8 +158,7 @@
         if config_storage:
             self.storage = get_storage(**config_storage)
 
-        objstorage = self.config["objstorage"]
-        self.objstorage = get_objstorage(objstorage["cls"], objstorage["args"])
+        self.objstorage = get_objstorage(**self.config["objstorage"])
 
         idx_storage = self.config[INDEXER_CFG_KEY]
         self.idx_storage = get_indexer_storage(**idx_storage)
diff --git a/swh/indexer/tests/conftest.py b/swh/indexer/tests/conftest.py
--- a/swh/indexer/tests/conftest.py
+++ b/swh/indexer/tests/conftest.py
@@ -73,7 +73,7 @@
     classes.
 
     """
-    objstorage = get_objstorage("memory", {})
+    objstorage = get_objstorage("memory")
     fill_obj_storage(objstorage)
     with patch.dict(
         "swh.objstorage.factory._STORAGE_CLASSES", {"memory": lambda: objstorage}
@@ -85,8 +85,8 @@
 def swh_indexer_config():
     return {
         "storage": {"cls": "memory"},
-        "objstorage": {"cls": "memory", "args": {},},
-        "indexer_storage": {"cls": "memory", "args": {},},
+        "objstorage": {"cls": "memory"},
+        "indexer_storage": {"cls": "memory"},
         "tools": {
             "name": "file",
             "version": "1:5.30-1+deb9u1",
diff --git a/swh/indexer/tests/utils.py b/swh/indexer/tests/utils.py
--- a/swh/indexer/tests/utils.py
+++ b/swh/indexer/tests/utils.py
@@ -34,8 +34,8 @@
 
 BASE_TEST_CONFIG: Dict[str, Dict[str, Any]] = {
     "storage": {"cls": "memory"},
-    "objstorage": {"cls": "memory", "args": {},},
-    INDEXER_CFG_KEY: {"cls": "memory", "args": {},},
+    "objstorage": {"cls": "memory"},
+    INDEXER_CFG_KEY: {"cls": "memory"},
 }