diff --git a/swh/storage/archiver/updater.py b/swh/storage/archiver/updater.py
new file mode 100644
index 00000000..e3df15c5
--- /dev/null
+++ b/swh/storage/archiver/updater.py
@@ -0,0 +1,48 @@
+# Copyright (C) 2017  The Software Heritage developers
+# See the AUTHORS file at the top-level directory of this distribution
+# License: GNU General Public License version 3, or any later version
+# See top-level LICENSE file for more information
+
+from swh.journal.client import SWHJournalClient
+
+from .storage import ArchiverStorage
+
+
+class SWHArchiverContentUpdater(SWHJournalClient):
+    """Client in charge of updating new contents in the content_archiver
+       db.
+
+       This is a swh.journal client only dealing with contents.
+
+    """
+    ADDITIONAL_CONFIG = {
+        'archiver_storage_conn': (
+            'str', 'dbname=softwareheritage-archiver-dev user=guest'),
+        'sources_missing': ('list[str]', ['banco', 'azure']),
+        'sources_present': ('list[str]', ['uffizi'])
+
+    }
+
+    def __init__(self):
+        # Only interested in content here so override the configuration
+        super().__init__(extra_configuration={'object_types': ['content']})
+
+        self.sources_present = self.config['sources_present']
+        self.sources_missing = self.config['sources_missing']
+
+        self.archiver_storage = ArchiverStorage(
+            self.config['archiver_storage_conn'])
+
+    def process_objects(self, messages):
+        key_id = b'sha1'
+
+        content_ids = [{'content_id': c[key_id]} for c in messages['content']]
+        unknowns = self.archiver_storage.content_archive_get_unknown(
+            content_ids)
+        self.archiver_storage.content_archive_content_add(
+            unknowns, self.sources_present, self.sources_missing)
+
+
+if __name__ == '__main__':
+    content_updater = SWHArchiverContentUpdater()
+    content_updater.process()