diff --git a/types/node/v6/index.d.ts b/types/node/v6/index.d.ts
index 6bac11b605..0c1796368e 100644
--- a/types/node/v6/index.d.ts
+++ b/types/node/v6/index.d.ts
@@ -358,10 +358,19 @@ declare namespace NodeJS {
         isTTY?: true;
     }
 
+    export interface WriteStream extends Socket {
+        columns?: number;
+        rows?: number;
+    }
+    export interface ReadStream extends Socket {
+        isRaw?: boolean;
+        setRawMode?(mode: boolean): void;
+    }
+
     export interface Process extends EventEmitter {
-        stdout: Socket;
-        stderr: Socket;
-        stdin: Socket;
+        stdout: WriteStream;
+        stderr: WriteStream;
+        stdin: ReadStream;
         argv: string[];
         argv0: string;
         execArgv: string[];