diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c9fa36..95f6dd3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ This is the Developer Changelog for Matomo PHP Tracker. All breaking changes or
 ### Changed
 - a lot of arguments of `MatomoTracker` methods have explicitly types
 - a lot of `MatomoTracker` method return types have strict types
+- Support for formFactors client hint parameter, supported as of Matomo 5.2.0
 
 ## Matomo PHP Tracker 3.3.1
 ### Fixed