diff --git a/src/google/adk/sessions/database_session_service.py b/src/google/adk/sessions/database_session_service.py
index 9bfa3cc..c7caa19 100644
--- a/src/google/adk/sessions/database_session_service.py
+++ b/src/google/adk/sessions/database_session_service.py
@@ -386,6 +386,7 @@ class DatabaseSessionService(BaseSessionService):
               else True
           )
           .limit(config.num_recent_events if config else None)
+          .order_by(StorageEvent.timestamp.asc())
           .all()
       )