diff --git a/swh/storage/cassandra/storage.py b/swh/storage/cassandra/storage.py
--- a/swh/storage/cassandra/storage.py
+++ b/swh/storage/cassandra/storage.py
@@ -582,17 +582,14 @@
     def release_missing(self, releases: List[Sha1Git]) -> Iterable[Sha1Git]:
         return self._cql_runner.release_missing(releases)
 
-    def release_get(
-        self, releases: List[Sha1Git]
-    ) -> Iterable[Optional[Dict[str, Any]]]:
+    def release_get(self, releases: List[Sha1Git]) -> List[Optional[Release]]:
         rows = self._cql_runner.release_get(releases)
-        rels = {}
+        rels: Dict[Sha1Git, Release] = {}
         for row in rows:
             release = converters.release_from_db(row)
-            rels[row.id] = release.to_dict()
+            rels[row.id] = release
 
-        for rel_id in releases:
-            yield rels.get(rel_id)
+        return [rels.get(rel_id) for rel_id in releases]
 
     def release_get_random(self) -> Sha1Git:
         release = self._cql_runner.release_get_random()
diff --git a/swh/storage/interface.py b/swh/storage/interface.py
--- a/swh/storage/interface.py
+++ b/swh/storage/interface.py
@@ -588,17 +588,15 @@
         ...
 
     @remote_api_endpoint("release")
-    def release_get(
-        self, releases: List[Sha1Git]
-    ) -> Iterable[Optional[Dict[str, Any]]]:
+    def release_get(self, releases: List[Sha1Git]) -> List[Optional[Release]]:
         """Given a list of sha1, return the releases's information
 
         Args:
             releases: list of sha1s
 
-        Yields:
-            dicts with the same keys as those given to `release_add`
-            (or ``None`` if a release does not exist)
+        Returns:
+            List of releases matching the identifiers or None if the release does
+            not exist.
 
         """
         ...
diff --git a/swh/storage/postgresql/storage.py b/swh/storage/postgresql/storage.py
--- a/swh/storage/postgresql/storage.py
+++ b/swh/storage/postgresql/storage.py
@@ -686,13 +686,15 @@
             yield obj[0]
 
     @timed
-    @db_transaction_generator(statement_timeout=500)
+    @db_transaction(statement_timeout=500)
     def release_get(
         self, releases: List[Sha1Git], db=None, cur=None
-    ) -> Iterable[Optional[Dict[str, Any]]]:
+    ) -> List[Optional[Release]]:
+        rels = []
         for release in db.release_get_from_list(releases, cur):
             data = converters.db_to_release(dict(zip(db.release_get_cols, release)))
-            yield data.to_dict() if data else None
+            rels.append(data if data else None)
+        return rels
 
     @timed
     @db_transaction()
diff --git a/swh/storage/tests/storage_tests.py b/swh/storage/tests/storage_tests.py
--- a/swh/storage/tests/storage_tests.py
+++ b/swh/storage/tests/storage_tests.py
@@ -29,7 +29,6 @@
     OriginVisit,
     OriginVisitStatus,
     Person,
-    Release,
     Revision,
     Snapshot,
     TargetType,
@@ -1076,13 +1075,12 @@
         swh_storage.release_add([release, release2])
 
         # when
-        releases = list(swh_storage.release_get([release.id, release2.id]))
-        actual_releases = [Release.from_dict(r) for r in releases]
+        actual_releases = swh_storage.release_get([release.id, release2.id])
 
         # then
         assert actual_releases == [release, release2]
 
-        unknown_releases = list(swh_storage.release_get([release3.id]))
+        unknown_releases = swh_storage.release_get([release3.id])
         assert unknown_releases[0] is None
 
     def test_release_get_order(self, swh_storage, sample_data):
@@ -1092,12 +1090,12 @@
         assert add_result == {"release:add": 2}
 
         # order 1
-        res1 = swh_storage.release_get([release.id, release2.id])
-        assert list(res1) == [release.to_dict(), release2.to_dict()]
+        actual_releases = swh_storage.release_get([release.id, release2.id])
+        assert actual_releases == [release, release2]
 
         # order 2
-        res2 = swh_storage.release_get([release2.id, release.id])
-        assert list(res2) == [release2.to_dict(), release.to_dict()]
+        actual_releases2 = swh_storage.release_get([release2.id, release.id])
+        assert actual_releases2 == [release2, release]
 
     def test_release_get_random(self, swh_storage, sample_data):
         release, release2, release3 = sample_data.releases[:3]
diff --git a/swh/storage/tests/test_retry.py b/swh/storage/tests/test_retry.py
--- a/swh/storage/tests/test_retry.py
+++ b/swh/storage/tests/test_retry.py
@@ -689,16 +689,16 @@
     """
     sample_rel = sample_data.release
 
-    release = next(swh_storage.release_get([sample_rel.id]))
-    assert not release
+    release = swh_storage.release_get([sample_rel.id])[0]
+    assert release is None
 
     s = swh_storage.release_add([sample_rel])
     assert s == {
         "release:add": 1,
     }
 
-    release = next(swh_storage.release_get([sample_rel.id]))
-    assert release["id"] == sample_rel.id
+    release = swh_storage.release_get([sample_rel.id])[0]
+    assert release == sample_rel
 
 
 def test_retrying_proxy_storage_release_add_with_retry(
@@ -719,8 +719,8 @@
 
     sample_rel = sample_data.release
 
-    release = next(swh_storage.release_get([sample_rel.id]))
-    assert not release
+    release = swh_storage.release_get([sample_rel.id])[0]
+    assert release is None
 
     s = swh_storage.release_add([sample_rel])
     assert s == {
@@ -743,8 +743,8 @@
 
     sample_rel = sample_data.release
 
-    release = next(swh_storage.release_get([sample_rel.id]))
-    assert not release
+    release = swh_storage.release_get([sample_rel.id])[0]
+    assert release is None
 
     with pytest.raises(StorageArgumentException, match="Refuse to add"):
         swh_storage.release_add([sample_rel])