diff --git a/swh/storage/postgresql/db.py b/swh/storage/postgresql/db.py
--- a/swh/storage/postgresql/db.py
+++ b/swh/storage/postgresql/db.py
@@ -4,6 +4,7 @@
 # See top-level LICENSE file for more information
 
 import datetime
+import logging
 import random
 import select
 from typing import Any, Dict, Iterable, List, Optional, Tuple
@@ -15,6 +16,8 @@
 from swh.model.model import SHA1_SIZE, OriginVisit, OriginVisitStatus
 from swh.storage.interface import ListOrder
 
+logger = logging.getLogger(__name__)
+
 
 def jsonize(d):
     return _jsonize(dict(d) if d is not None else None)
@@ -1340,4 +1343,12 @@
             return dict(zip(self.dbversion_cols, cur.fetchone()))
 
     def check_dbversion(self):
-        return self.dbversion()["version"] == self.current_version
+        dbversion = self.dbversion()["version"]
+        if dbversion != self.current_version:
+            logger.warning(
+                "database dbversion (%s) != %s current_version (%s)",
+                dbversion,
+                __name__,
+                self.current_version,
+            )
+        return dbversion == self.current_version