diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4f2f8d8d3..1fe32188e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
     * Use PHP 7.4 serialization (the old `Serializable` methods are now final and cannot be overridden)
     * Enabled `ETag` setting by default for 304 responses
     * Added `FlexCollection::getDistinctValues()` to get all the assigned values from the field
+    * `Flex Pages` method `$page->header()` returns `\Grav\Common\Page\Header` object, old `Page` class still returns `stdClass`
 1. [](#improved)
     * Make it possible to use an absolute path when loading a blueprint
     * Make serialize methods final in `ContentBlock`, `AbstractFile`, `FormTrait`, `ObjectCollectionTrait` and `ObjectTrait`