diff --git a/src/content/docs/maintenance/Updating/0-7-to-0-8.mdoc b/src/content/docs/maintenance/Updating/0-7-to-0-8.mdoc
index a99070f..0a63168 100644
--- a/src/content/docs/maintenance/Updating/0-7-to-0-8.mdoc
+++ b/src/content/docs/maintenance/Updating/0-7-to-0-8.mdoc
@@ -241,6 +241,12 @@ The following filters and functions have been **added**:
 | `hash` | Hash a value (defaults to xxh128) |
 | `api_url` | Supports `role` parameter to override the API area |
 
+### Custom Invoice PDF Templates
+
+If you previously created a `custom-pdf.twig` template in 0.7.x, the patcher has migrated it to `custom-invoice.twig`. However, the patcher does **not** update the filter usage inside your custom template.
+
+Review `modules/Invoice/templates/pdf/custom-invoice.twig` for any removed or renamed filters from the table above and update them accordingly. Refer to the bundled `modules/Invoice/templates/pdf/default-invoice.twig` as a reference for the correct template syntax.
+
 ### Theme HTML Changes
 
 Key template changes in both bundled themes (admin_default and huraga):