diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,3 +1,3 @@
-swh.core[http] >= 0.3
+swh.core[http] >= 2.2.0
 swh.model >= 0.0.27
 swh.perfecthash >= 0.1.2
diff --git a/swh/objstorage/api/client.py b/swh/objstorage/api/client.py
--- a/swh/objstorage/api/client.py
+++ b/swh/objstorage/api/client.py
@@ -4,10 +4,13 @@
 # See top-level LICENSE file for more information
 
 from swh.core.api import RPCClient
+from swh.core.utils import iter_chunks
 from swh.model import hashutil
 from swh.objstorage.exc import Error, ObjNotFoundError, ObjStorageAPIError
 from swh.objstorage.objstorage import DEFAULT_CHUNK_SIZE, DEFAULT_LIMIT
 
+SHA1_SIZE = 20
+
 
 class RemoteObjStorage:
     """Proxy to a remote object storage.
@@ -80,10 +83,12 @@
         )
 
     def __iter__(self):
-        yield from self._proxy.get_stream("content")
+        yield from self.list_content()
 
     def list_content(self, last_obj_id=None, limit=DEFAULT_LIMIT):
         params = {"limit": limit}
         if last_obj_id:
             params["last_obj_id"] = hashutil.hash_to_hex(last_obj_id)
-        yield from self._proxy.get_stream("content", params=params)
+        yield from iter_chunks(
+            self._proxy.get_stream("content", params=params), chunk_size=SHA1_SIZE
+        )