diff --git a/addons/queue_job/models/ir_model_fields.py b/addons/queue_job/models/ir_model_fields.py
new file mode 100644
index 0000000..5a31fcd
--- /dev/null
+++ b/addons/queue_job/models/ir_model_fields.py
@@ -0,0 +1,13 @@
+# Copyright 2020 Camptocamp
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html)
+
+from odoo import fields, models
+
+
+class IrModelFields(models.Model):
+    _inherit = "ir.model.fields"
+
+    ttype = fields.Selection(
+        selection_add=[("job_serialized", "Job Serialized")],
+        ondelete={"job_serialized": "cascade"},
+    )