diff --git a/partner_contact_department/__manifest__.py b/partner_contact_department/__manifest__.py
index 2c2dd1ff1..b0fa03cec 100644
--- a/partner_contact_department/__manifest__.py
+++ b/partner_contact_department/__manifest__.py
@@ -6,12 +6,12 @@
 {
     'name': 'Partner Contact Department',
     "summary": "Assign contacts to departments",
-    'version': '11.0.1.0.0',
+    'version': '12.0.1.0.0',
     'category': 'Customer Relationship Management',
     'author': 'Tecnativa, '
               'Odoo Community Association (OCA)',
     "license": "AGPL-3",
-    'website': 'http://www.tecnativa.com',
+    'website': 'https://github.com/OCA/partner-contact',
     "application": False,
     'depends': [
         'contacts',
diff --git a/partner_contact_department/migrations/12.0.1.0.0/post-migration.py b/partner_contact_department/migrations/12.0.1.0.0/post-migration.py
new file mode 100644
index 000000000..c16403627
--- /dev/null
+++ b/partner_contact_department/migrations/12.0.1.0.0/post-migration.py
@@ -0,0 +1,8 @@
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from openupgradelib import openupgrade
+
+
+@openupgrade.migrate(use_env=True)
+def migrate(env, version):
+    env['res.partner.department']._parent_store_compute()
diff --git a/partner_contact_department/models/res_partner.py b/partner_contact_department/models/res_partner.py
index e2271f3cc..84423d360 100644
--- a/partner_contact_department/models/res_partner.py
+++ b/partner_contact_department/models/res_partner.py
@@ -12,27 +12,32 @@ class ResPartner(models.Model):
     department_id = fields.Many2one(
         "res.partner.department",
         "Department",
-        oldname="department")
+        oldname="department"
+    )
 
 
 class ResPartnerDepartment(models.Model):
     _name = 'res.partner.department'
-    _order = "parent_left"
+    _order = "parent_path"
     _parent_order = "name"
     _parent_store = True
     _description = "Department"
 
-    name = fields.Char(required=True, translate=True)
+    name = fields.Char(
+        required=True,
+        translate=True
+    )
     parent_id = fields.Many2one(
         "res.partner.department",
         "Parent department",
-        ondelete='restrict')
+        ondelete='restrict'
+    )
     child_ids = fields.One2many(
         "res.partner.department",
         "parent_id",
-        "Child departments")
-    parent_left = fields.Integer(index=True)
-    parent_right = fields.Integer(index=True)
+        "Child departments"
+    )
+    parent_path = fields.Char(index=True)
 
     @api.constrains('parent_id')
     def _check_parent_id(self):
diff --git a/partner_contact_department/readme/CONTRIBUTORS.rst b/partner_contact_department/readme/CONTRIBUTORS.rst
index 32f276341..2e8045a46 100644
--- a/partner_contact_department/readme/CONTRIBUTORS.rst
+++ b/partner_contact_department/readme/CONTRIBUTORS.rst
@@ -4,3 +4,4 @@
 * Jairo Llopis <jairo.llopis@tecnativa.com>
 * Vicent Cubells <vicent.cubells@tecnativa.com>
 * David Vidal <david.vidal@tecnativa.com>
+* Nikul Chaudhary <nikulchaudhary2112@gmail.com>
diff --git a/partner_contact_department/tests/test_recursion.py b/partner_contact_department/tests/test_recursion.py
index fc37be866..bcda4aadb 100644
--- a/partner_contact_department/tests/test_recursion.py
+++ b/partner_contact_department/tests/test_recursion.py
@@ -12,19 +12,18 @@ class TestRecursion(common.SavepointCase):
         cls.department_obj = cls.env['res.partner.department']
 
         # Instances
-        cls.dpt1 = cls.department_obj.create(vals=dict(name='Dpt. 1'))
-        cls.dpt2 = cls.department_obj.create(
-            vals=dict(
-                name='Dpt. 2',
-                parent_id=cls.dpt1.id
-            ))
+        cls.dpt1 = cls.department_obj.create({'name': 'Dpt. 1'})
+        cls.dpt2 = cls.department_obj.create({
+            'name': 'Dep. 2',
+            'parent_id': cls.dpt1.id
+        })
 
     def test_recursion(self):
         """ Testing recursion """
-        self.dpt3 = self.department_obj.create(vals=dict(
-            name='Dpt. 3',
-            parent_id=self.dpt2.id
-        ))
+        self.dpt3 = self.department_obj.create({
+            'name': 'Dep. 3',
+            'parent_id': self.dpt2.id
+        })
         # Creating a parent's child department using dpt1.
         with self.assertRaises(ValidationError):
             self.dpt1.write(vals={'parent_id': self.dpt3.id})