diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,6 +1,6 @@
 swh.core >= 0.0.95
 swh.indexer >= 0.0.171
-swh.model >= 0.3.4
+swh.model >= 0.3.5
 swh.scheduler >= 0.1.1
 swh.search >= 0.0.4
 swh.storage >= 0.8.0
diff --git a/swh/web/tests/views.py b/swh/web/tests/views.py
--- a/swh/web/tests/views.py
+++ b/swh/web/tests/views.py
@@ -16,6 +16,7 @@
 from swh.model import from_disk
 from swh.model.hashutil import hash_to_hex
 from swh.model.model import Content
+from swh.model.from_disk import DiskBackedContent
 from swh.web.common.highlightjs import get_hljs_language_from_filename
 from swh.web.tests.data import get_tests_data
 
@@ -44,7 +45,7 @@
 
     contents = []
     for name, obj in directory.items():
-        if isinstance(obj, from_disk.Content):
+        if obj.object_type in [Content.object_type, DiskBackedContent.object_type]:
             c = obj.to_model().with_data().to_dict()
             c["status"] = "visible"
             sha1 = hash_to_hex(c["sha1"])