diff --git a/types/backbone.marionette/index.d.ts b/types/backbone.marionette/index.d.ts
index cd8ccd3821..52f316ace1 100644
--- a/types/backbone.marionette/index.d.ts
+++ b/types/backbone.marionette/index.d.ts
@@ -1394,27 +1394,27 @@ export class CollectionView<TModel extends Backbone.Model, TView extends View<TM
      * instance is about to be added to the collection view. It provides
      * access to the view instance for the child that was added.
      */
-    onBeforeAddChild(childView: TView): void;
+    onBeforeAddChild(collectionView: CollectionView<TModel, TView, TCollection>, childView: TView): void;
 
     /**
      * This callback function allows you to know when a child / child view
      * instance has been added to the collection view. It provides access to
      * the view instance for the child that was added.
      */
-    onAddChild(childView: TView): void;
+    onAddChild(collectionView: CollectionView<TModel, TView, TCollection>, childView: TView): void;
 
     /**
      * This callback function allows you to know when a childView instance is
      * about to be removed from the collectionView. It provides access to the
      * view instance for the child that was removed.
      */
-    onBeforeRemoveChild(childView: TView): void;
+    onBeforeRemoveChild(collectionView: CollectionView<TModel, TView, TCollection>, childView: TView): void;
 
     /**
      * This callback function allows you to know when a child / childView
      * instance has been deleted or removed from the collection.
      */
-    onRemoveChild(childView: TView): void;
+    onRemoveChild(collectionView: CollectionView<TModel, TView, TCollection>, childView: TView): void;
 
     /**
      * Automatically destroys this Collection's children and cleans up