diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,4 +1,4 @@
-swh.core >= 0.0.51
+swh.core >= 0.0.54
 swh.model >= 0.0.27
 swh.objstorage >= 0.0.17
 swh.scheduler >= 0.0.14
diff --git a/swh/storage/tests/test_db.py b/swh/storage/tests/test_db.py
--- a/swh/storage/tests/test_db.py
+++ b/swh/storage/tests/test_db.py
@@ -47,4 +47,4 @@
         self.db.content_add_from_temp(cur)
         self.cursor.execute('SELECT sha1 FROM content WHERE sha1 = %s',
                             (sha1,))
-        self.assertEqual(self.cursor.fetchone()[0].tobytes(), sha1)
+        self.assertEqual(self.cursor.fetchone()[0], sha1)