diff --git a/types/pump/index.d.ts b/types/pump/index.d.ts
index 6e8cc7fc8e..456860fbf8 100644
--- a/types/pump/index.d.ts
+++ b/types/pump/index.d.ts
@@ -1,14 +1,14 @@
-// Type definitions for pump 1.0
+// Type definitions for pump 1.1
 // Project: https://github.com/mafintosh/pump
-// Definitions by: Tomek Łaziuk <https://github.com/tlaziuk>
+// Definitions by: Tomek Łaziuk <https://github.com/tlaziuk>, Jason Cordial <https://github.com/jcordial>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="node" />
 
-declare function pump(streams: pump.Stream[], callback?: pump.Callback): pump.Stream[];
+declare function pump(streams: pump.Stream[], callback?: pump.Callback): pump.Stream;
 
 // callback have to be passed as last argument
-declare function pump(...streams: Array<pump.Stream | pump.Callback>): pump.Stream[];
+declare function pump(...streams: Array<pump.Stream | pump.Callback>): pump.Stream;
 
 declare namespace pump {
     type Callback = (err: Error) => any;
diff --git a/types/pump/pump-tests.ts b/types/pump/pump-tests.ts
index cf3393de21..77de4983e5 100644
--- a/types/pump/pump-tests.ts
+++ b/types/pump/pump-tests.ts
@@ -47,6 +47,8 @@ setTimeout(() => {
     throw new Error('timeout');
 }, 5000);
 
+// $ExpectType Stream
 pump(createReadStream('/dev/random'), toHex(), createWriteStream('/dev/null'));
 
+// $ExpectType Stream
 pump([createReadStream('/dev/random'), toHex(), createWriteStream('/dev/null')]);