diff --git a/d3/d3.d.ts b/d3/d3.d.ts
index e97e12bf53..988d4fb35c 100644
--- a/d3/d3.d.ts
+++ b/d3/d3.d.ts
@@ -714,6 +714,7 @@ declare module D3 {
         data: {
             (values: (data: any, index?: number) => any[], key?: (data: any, index?: number) => string): UpdateSelection;
             (values: any[], key?: (data: any, index?: number) => string): UpdateSelection;
+            (): any[];
         };
 
         datum: {