diff --git a/app/Database/Migrations/20240630000001_fix_keys_for_db_upgrade.php b/app/Database/Migrations/20240630000001_fix_keys_for_db_upgrade.php
new file mode 100644
index 000000000..2d929400b
--- /dev/null
+++ b/app/Database/Migrations/20240630000001_fix_keys_for_db_upgrade.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Database\Migrations;
+
+use CodeIgniter\Database\Migration;
+
+class Migration_fix_keys_for_db_upgrade extends Migration
+{
+	/**
+	 * Perform a migration step.
+	 */
+	public function up(): void
+	{
+		$this->db->query('ALTER TABLE ' . $this->db->prefixTable('sales_items_taxes') . ' DROP FOREIGN KEY ospos_sales_items_taxes_ibfk_1');
+		$this->db->query('ALTER TABLE ' . $this->db->prefixTable('sales_items_taxes')
+			. ' ADD CONSTRAINT ospos_sales_items_taxes_ibfk_1 FOREIGN KEY (sale_id, item_id, line) '
+			. ' REFERENCES ' . $this->db->prefixTable('sales_items') . ' (sale_id, item_id, line)');
+	}
+
+	/**
+	 * Revert a migration step.
+	 */
+	public function down(): void
+	{
+		$this->db->query('ALTER TABLE ' . $this->db->prefixTable('sales_items_taxes') . ' DROP CONSTRAINT ospos_sales_items_taxes_ibfk_1');
+		$this->db->query('ALTER TABLE ' . $this->db->prefixTable('sales_items_taxes')
+			. ' ADD CONSTRAINT ospos_sales_items_taxes_ibfk_1 FOREIGN KEY (sale_id) '
+			. ' REFERENCES ' . $this->db->prefixTable('sales_items') . ' (sale_id)');
+	}
+}