diff --git a/sale_order_secondary_unit/migrations/15.0.2.0.0/post-migration.py b/sale_order_secondary_unit/migrations/15.0.2.0.0/post-migration.py
new file mode 100644
index 00000000000..55b11c79f67
--- /dev/null
+++ b/sale_order_secondary_unit/migrations/15.0.2.0.0/post-migration.py
@@ -0,0 +1,17 @@
+# Copyright 2023 Tecnativa - Sergio Teruel
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from openupgradelib import openupgrade
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    # Set default sale secondary uom from template to variants
+    sql = """
+        UPDATE product_product pp
+        SET sale_secondary_uom_id = pt.sale_secondary_uom_id
+        FROM product_template pt
+        WHERE pt.id = pp.product_tmpl_id
+        AND pt.sale_secondary_uom_id IS NOT NULL
+    """
+    openupgrade.logged_query(env.cr, sql)