diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 9487f3028..dcb9bb9b7 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -11,6 +11,7 @@ Changelog
  * View live / draft links in the admin now consistently open in a new window (Marco Fucci)
  * `ChoiceBlock` now omits the blank option if the block is required and has a default value (Andreas Nüßlein)
  * The `add_subpage` view now maintains a `next` URL parameter to specify where to redirect to after completing page creation (Robert Rollins)
+ * The `wagtailforms` module now allows to define custom form submission model, add custom data to CSV export and some other customisations (Mikalai Radchuk)
  * Fix: Help text for StreamField is now visible and does not cover block controls (Stein Strindhaug)
  * Fix: "X minutes ago" timestamps are now marked for translation (Janneke Janssen, Matt Westcott)
  * Fix: Avoid indexing unsaved field content on `save(update_fields=[...])` operations (Matt Westcott)
diff --git a/docs/releases/1.9.rst b/docs/releases/1.9.rst
index 3fbc6d35d..1c8e54579 100644
--- a/docs/releases/1.9.rst
+++ b/docs/releases/1.9.rst
@@ -35,6 +35,7 @@ Other features
  * View live / draft links in the admin now consistently open in a new window (Marco Fucci)
  * ``ChoiceBlock`` now omits the blank option if the block is required and has a default value (Andreas Nüßlein)
  * The ``add_subpage`` view now maintains a ``next`` URL parameter to specify where to redirect to after completing page creation (Robert Rollins)
+ * The ``wagtailforms`` module now allows to define custom form submission model, add custom data to CSV export and some other customisations. See :doc:`/reference/contrib/forms/customisation` (Mikalai Radchuk)
 
 
 Bug fixes