diff --git a/en/04_Changelogs/5.0.0.md b/en/04_Changelogs/5.0.0.md
index 4025e666d..c374ea2da 100644
--- a/en/04_Changelogs/5.0.0.md
+++ b/en/04_Changelogs/5.0.0.md
@@ -83,6 +83,7 @@ This is a major release and as a result there are a number of breaking API chang
 ### General changes {#api-general}
 
 - `isDev` and `isTest` querystring arguments have been removed due to security concerns (see [ss-2018-005](https://www.silverstripe.org/download/security-releases/ss-2018-005/)).
+- The `updateRelativeLink()` extension hook for updating the result of [SiteTree::RelativeLink()](api:SilverStripe\CMS\Model\SiteTree::RelativeLink()) has changed signature, allowing you to update the resultant link itself instead of just the component parts. If you are using this extension hook you will need to update the method signature and logic to match. See [SiteTreeExtension::updateRelativeLink()](api:SilverStripe\CMS\Model\SiteTreeExtension::updateRelativeLink()) for more details.
 - The default value for the `RESOURCES_DIR` const has been changed to to "_resources"
   - The `Library::DEFAULT_RESOURCES_DIR` const in `silverstripe/vendor-plugin` has been changed to match.
   - This can still be customised using `extra.resources-dir` in your composer.json file ([see relevant docs](developer_guides/templates/requirements/#configuring-your-project-exposed-folders))