diff --git a/attachment_category/__manifest__.py b/attachment_category/__manifest__.py
index e8039ece..f9f2163b 100644
--- a/attachment_category/__manifest__.py
+++ b/attachment_category/__manifest__.py
@@ -5,11 +5,12 @@
     'name': 'Atachment Category',
     'summary': """
         Adds a document category to help classification""",
-    'version': '12.0.1.0.0',
+    'version': '11.0.1.0.0',
     'license': 'AGPL-3',
     'author': 'ACSONE SA/NV,Odoo Community Association (OCA)',
     'depends': [
         "base",
+        "knowledge",
     ],
     'data': [
         'views/ir_attachment.xml',
diff --git a/attachment_category/models/ir_attachment_category.py b/attachment_category/models/ir_attachment_category.py
index b0bc8527..c5e658a4 100644
--- a/attachment_category/models/ir_attachment_category.py
+++ b/attachment_category/models/ir_attachment_category.py
@@ -17,8 +17,11 @@ class IrAttachmentCategory(models.Model):
     )
     parent_id = fields.Many2one(
         "ir.attachment.category",
+        index=True,
+        ondelete="cascade",
     )
-    parent_path = fields.Char(index=True)
+    parent_left = fields.Integer('Left Parent', index=True)
+    parent_right = fields.Integer('Right Parent', index=True)
     attachment_ids = fields.Many2many(
         compute="_compute_attachment_count",
         comodel_name="ir.attachment"
diff --git a/attachment_category/views/ir_attachment_category.xml b/attachment_category/views/ir_attachment_category.xml
index 4b1fc7fe..8c1f9777 100644
--- a/attachment_category/views/ir_attachment_category.xml
+++ b/attachment_category/views/ir_attachment_category.xml
@@ -63,7 +63,7 @@
 
     <record model="ir.ui.menu" id="ir_attachment_category_menu">
         <field name="name">Attachment Categories</field>
-        <field name="parent_id" ref="base.next_id_9"/>
+        <field name="parent_id" ref="knowledge.menu_document_section"/>
         <field name="action" ref="ir_attachment_category_act_window"/>
         <field name="sequence" eval="16"/>
     </record>
diff --git a/setup/attachment_category/.eggs/README.txt b/setup/attachment_category/.eggs/README.txt
new file mode 100644
index 00000000..5d016688
--- /dev/null
+++ b/setup/attachment_category/.eggs/README.txt
@@ -0,0 +1,6 @@
+This directory contains eggs that were downloaded by setuptools to build, test, and run plug-ins.
+
+This directory caches those eggs to prevent repeated downloads.
+
+However, it is safe to delete this directory.
+
diff --git a/setup/attachment_category/setup.cfg b/setup/attachment_category/setup.cfg
new file mode 100644
index 00000000..3c6e79cf
--- /dev/null
+++ b/setup/attachment_category/setup.cfg
@@ -0,0 +1,2 @@
+[bdist_wheel]
+universal=1