diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,4 +1,4 @@
-swh.core[db,http] >= 0.2.2
+swh.core[db,http] >= 0.2.3
 swh.model >= 0.0.15
 swh.objstorage >= 0.0.43
 swh.scheduler >= 0.5.2
diff --git a/swh/indexer/storage/in_memory.py b/swh/indexer/storage/in_memory.py
--- a/swh/indexer/storage/in_memory.py
+++ b/swh/indexer/storage/in_memory.py
@@ -12,10 +12,10 @@
 from collections import defaultdict, Counter
 from typing import Any, Dict, List, Optional
 
+from swh.core.collections import SortedList
 from swh.model.model import SHA1_SIZE
 from swh.model.hashutil import hash_to_hex, hash_to_bytes
 from swh.storage.utils import get_partition_bounds_bytes
-from swh.storage.in_memory import SortedList
 
 from . import MAPPING_NAMES, check_id_duplicates
 from .exc import IndexerStorageArgumentException