diff --git a/base_m2m_custom_field/__manifest__.py b/base_m2m_custom_field/__manifest__.py
index 8fb5e575d..260f581de 100644
--- a/base_m2m_custom_field/__manifest__.py
+++ b/base_m2m_custom_field/__manifest__.py
@@ -3,7 +3,7 @@
 {
     "name": "Base Many2many Custom Field",
     "summary": "Customizations of Many2many",
-    "version": "13.0.1.0.0",
+    "version": "14.0.1.0.0",
     "category": "Technical Settings",
     "author": "Camptocamp, Odoo Community Association (OCA)",
     "license": "AGPL-3",
diff --git a/base_m2m_custom_field/fields.py b/base_m2m_custom_field/fields.py
index 80e3372f6..269d0f5c4 100644
--- a/base_m2m_custom_field/fields.py
+++ b/base_m2m_custom_field/fields.py
@@ -10,7 +10,7 @@ class Many2manyCustom(fields.Many2many):
     at the initialization of the field (boolean)
     """
 
-    _slots = {"create_table": True}
+    create_table = True
 
     def update_db(self, model, columns):
         if not self.create_table: