diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,3 +1,3 @@
 swh.core[db,http] >= 0.5
-swh.model >= 0.6.6
+swh.model >= 0.7.2
 swh.objstorage >= 0.2.2
diff --git a/swh/storage/validate.py b/swh/storage/validate.py
--- a/swh/storage/validate.py
+++ b/swh/storage/validate.py
@@ -38,7 +38,7 @@
 
     def _check_hashes(self, objects: Iterable):
         for obj in objects:
-            id_ = hash_to_bytes(obj.__class__.compute_hash(obj.to_dict()))
+            id_ = hash_to_bytes(obj.compute_hash())
             if id_ != obj.id:
                 raise StorageArgumentException(
                     f"Object has id {hash_to_hex(obj.id)}, "