diff --git a/beesdoo_purchase/__init__.py b/beesdoo_purchase/__init__.py
new file mode 100644
index 0000000..9a7e03e
--- /dev/null
+++ b/beesdoo_purchase/__init__.py
@@ -0,0 +1 @@
+from . import models
\ No newline at end of file
diff --git a/beesdoo_purchase/__openerp__.py b/beesdoo_purchase/__manifest__.py
similarity index 91%
rename from beesdoo_purchase/__openerp__.py
rename to beesdoo_purchase/__manifest__.py
index 50908ce..686afc6 100644
--- a/beesdoo_purchase/__openerp__.py
+++ b/beesdoo_purchase/__manifest__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 {
     'name': "Bees Purchase",
 
@@ -14,7 +13,7 @@
     'website': "https://github.com/beescoop/Obeesdoo",
 
     'category': 'Purchase',
-    'version': '9.0.1.1.0',
+    'version': '12.0.1.1.0',
 
     'depends': ['base', 'purchase', 'beesdoo_product'],
 
diff --git a/beesdoo_purchase/migrations/9.0.1.1.0/post-migrate.py b/beesdoo_purchase/migrations/9.0.1.1.0/post-migrate.py
deleted file mode 100644
index bcc9af5..0000000
--- a/beesdoo_purchase/migrations/9.0.1.1.0/post-migrate.py
+++ /dev/null
@@ -1,12 +0,0 @@
-# coding: utf-8
-
-
-def migrate(cr, version):
-    """Set the new supervisor_id field if this one is empty."""
-    cr.execute(
-        """
-        UPDATE purchase_order
-        SET supervisor_id = create_uid
-        WHERE supervisor_id IS NULL OR supervisor_id = 1
-        """
-    )
diff --git a/beesdoo_purchase/models/purchase.py b/beesdoo_purchase/models/purchase.py
index 0832d37..fe069e5 100644
--- a/beesdoo_purchase/models/purchase.py
+++ b/beesdoo_purchase/models/purchase.py
@@ -1,7 +1,4 @@
-# coding: utf-8
-
-from openerp import api, fields, models
-
+from odoo import api, fields, models
 
 class PurchaseOrder(models.Model):
     _inherit = "purchase.order"
diff --git a/beesdoo_purchase/models/purchase_order.py b/beesdoo_purchase/models/purchase_order.py
index 3731456..c572f8b 100644
--- a/beesdoo_purchase/models/purchase_order.py
+++ b/beesdoo_purchase/models/purchase_order.py
@@ -1,5 +1,4 @@
-# -*- coding: utf-8 -*-
-from openerp import models, fields, api
+from odoo import models, fields, api
 
 class PurchaseOrder(models.Model):
 
diff --git a/beesdoo_purchase/views/purchase_order.xml b/beesdoo_purchase/views/purchase_order.xml
index f649d78..71c0f81 100644
--- a/beesdoo_purchase/views/purchase_order.xml
+++ b/beesdoo_purchase/views/purchase_order.xml
@@ -1,4 +1,4 @@
-<openerp>
+<odoo>
     <data>
         <record model="ir.ui.view" id="beesdoo_purchase_order_form_view">
             <field name="name">beesdoo.purchase.order.form.view</field>
@@ -36,4 +36,4 @@
             </field>
         </record>
     </data>
-</openerp>
+</odoo>