diff --git a/InvenTree/InvenTree/settings.py b/InvenTree/InvenTree/settings.py
index ea0b235635..440d2d1a85 100644
--- a/InvenTree/InvenTree/settings.py
+++ b/InvenTree/InvenTree/settings.py
@@ -531,7 +531,7 @@ if "postgres" in db_engine:  # pragma: no cover
     # https://docs.djangoproject.com/en/3.2/ref/databases/#isolation-level
     if "isolation_level" not in db_options:
         serializable = _is_true(
-            os.getenv("INVENTREE_DB_ISOLATION_SERIALIZABLE", "true")
+            os.getenv("INVENTREE_DB_ISOLATION_SERIALIZABLE", "false")
         )
         db_options["isolation_level"] = (
             ISOLATION_LEVEL_SERIALIZABLE