diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22eb39c..24f86e5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# Unreleased
+
+* Update body classes for govuk-frontend-v5
+
 # 18.6.0
 
 * Remove the part of the body from the error message for SourceWrapperNotFoundError and do some cleanup