diff --git a/docs/changelog.rst b/docs/changelog.rst
index 846c5bbd..2a26fa07 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -5,6 +5,7 @@ Changelog
 
 Changes in 0.9.X - DEV
 ======================
+- Allow specifying the '_cls' as a field for indexes #397
 - Not overriding default values when loading a subset of fields #399
 - Saving document doesn't create new fields in existing collection #620
 - Added `Queryset.aggregate` wrapper to aggregation framework #703