diff --git a/addons/mrp/__init__.py b/addons/mrp/__init__.py
index 616729a420d..07f99e38042 100644
--- a/addons/mrp/__init__.py
+++ b/addons/mrp/__init__.py
@@ -16,3 +16,16 @@ def _create_warehouse_data(cr, registry):
     env = api.Environment(cr, SUPERUSER_ID, {})
     warehouse_ids = env['stock.warehouse'].search([('manufacture_pull_id', '=', False)])
     warehouse_ids.write({'manufacture_to_resupply': True})
+
+def uninstall_hook(cr, registry):
+    env = api.Environment(cr, SUPERUSER_ID, {})
+    warehouses = env["stock.warehouse"].search([])
+    subcontracting_routes = warehouses.mapped("pbm_route_id")
+    warehouses.write({"pbm_route_id": False})
+    # Fail unlink means that the route is used somewhere (e.g. route_id on stock.rule). In this case
+    # we don't try to do anything.
+    try:
+        subcontracting_routes.unlink()
+    except:
+        pass
+
diff --git a/addons/mrp/__manifest__.py b/addons/mrp/__manifest__.py
index f664c4883e2..4f08bb9f0ab 100644
--- a/addons/mrp/__manifest__.py
+++ b/addons/mrp/__manifest__.py
@@ -47,4 +47,5 @@
     'test': [],
     'application': True,
     'post_init_hook': '_create_warehouse_data',
+    'uninstall_hook': 'uninstall_hook',
 }
diff --git a/addons/mrp_subcontracting/__init__.py b/addons/mrp_subcontracting/__init__.py
index 35e7c9600c5..276d3a48dbf 100644
--- a/addons/mrp_subcontracting/__init__.py
+++ b/addons/mrp_subcontracting/__init__.py
@@ -1,4 +1,19 @@
 # -*- coding: utf-8 -*-
 
+from odoo import SUPERUSER_ID, api
+
 from . import models
 from . import wizard
+
+
+def uninstall_hook(cr, registry):
+    env = api.Environment(cr, SUPERUSER_ID, {})
+    warehouses = env["stock.warehouse"].search([])
+    subcontracting_routes = warehouses.mapped("subcontracting_route_id")
+    warehouses.write({"subcontracting_route_id": False})
+    # Fail unlink means that the route is used somewhere (e.g. route_id on stock.rule). In this case
+    # we don't try to do anything.
+    try:
+        subcontracting_routes.unlink()
+    except:
+        pass
diff --git a/addons/mrp_subcontracting/__manifest__.py b/addons/mrp_subcontracting/__manifest__.py
index e40a4ced61f..1d390e86d1c 100644
--- a/addons/mrp_subcontracting/__manifest__.py
+++ b/addons/mrp_subcontracting/__manifest__.py
@@ -23,4 +23,5 @@
     'demo': [
         'data/mrp_subcontracting_demo.xml',
     ],
+    'uninstall_hook': 'uninstall_hook',
 }