diff --git a/knockout/knockout.d.ts b/knockout/knockout.d.ts
index 80969ef0b..dfe113590 100644
--- a/knockout/knockout.d.ts
+++ b/knockout/knockout.d.ts
@@ -343,6 +343,7 @@ interface KnockoutArrayChange<T> {
     status: string;
     value: T;
     index: number;
+    moved?: number;
 }
 
 //////////////////////////////////