diff --git a/SUMMARY.md b/SUMMARY.md
index 5be727fea..fc71f6d86 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -50,4 +50,5 @@
    * [Through purchase department](through_purchase_department.md)
    * [Reseller](reseller.md)
    * Editions
+   * Invoices