diff --git a/types/split/index.d.ts b/types/split/index.d.ts
index f4cd33dd5e..abe4d616ba 100644
--- a/types/split/index.d.ts
+++ b/types/split/index.d.ts
@@ -1,16 +1,17 @@
-// Type definitions for split v0.3.3
+// Type definitions for split v1.0.1
 // Project: https://github.com/dominictarr/split
 // Definitions by: Marcin Porębski <https://github.com/marcinporebski>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="node" />
+/// <reference types="through" />
 
-
+import { ThroughStream } from 'through';
 
 interface SplitOptions {
     maxLength: number
 }
 
-declare function split(matcher?: any, mapper?: any, options?: SplitOptions): any;
+declare function split(matcher?: any, mapper?: any, options?: SplitOptions): ThroughStream;
 
 export = split;