diff --git a/types/ssh2-sftp-client/index.d.ts b/types/ssh2-sftp-client/index.d.ts
index d36869329b..2d8c4409e1 100644
--- a/types/ssh2-sftp-client/index.d.ts
+++ b/types/ssh2-sftp-client/index.d.ts
@@ -1,10 +1,11 @@
-// Type definitions for ssh2-sftp-client 2.5
-// Project: https://github.com/jyu213/ssh2-sftp-client
+// Type definitions for ssh2-sftp-client 4.1
+// Project: https://github.com/theophilusx/ssh2-sftp-client
 // Definitions by: igrayson <https://github.com/igrayson>
 //                 Ascari Andrea <https://github.com/ascariandrea>
 //                 Kartik Malik <https://github.com/kartik2406>
 //                 Michael Pertl <https://github.com/viamuli>
 //                 Orblazer <https://github.com/orblazer>
+//                 Taylor Herron <https://github.com/gbhmt>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 import * as ssh2 from 'ssh2';
@@ -17,10 +18,12 @@ declare class sftp {
 
     list(remoteFilePath: string): Promise<sftp.FileInfo[]>;
 
-    exists(remotePath: string): Promise<boolean>;
+    exists(remotePath: string): Promise<false | "d" | "-" | "l">;
 
     stat(remotePath: string): Promise<sftp.FileStats>;
 
+    realPath(remotePath: string): Promise<string>;
+
     get(path: string, dst?: string | NodeJS.ReadableStream, options?: boolean): Promise<string | NodeJS.ReadableStream | Buffer>;
 
     fastGet(remoteFilePath: string, localPath: string, options?: ssh2Stream.TransferOptions): Promise<string>;
@@ -29,6 +32,8 @@ declare class sftp {
 
     fastPut(localPath: string, remoteFilePath: string, options?: ssh2Stream.TransferOptions): Promise<string>;
 
+    cwd(): Promise<string>;
+
     mkdir(remoteFilePath: string, recursive?: boolean): Promise<string>;
 
     rmdir(remoteFilePath: string, recursive?: boolean): Promise<string>;
@@ -44,6 +49,8 @@ declare class sftp {
     end(): Promise<void>;
 
     on(event: string, callback: (...args: any[]) => void): void;
+
+    removeListener(event: string, callback: (...args: any[]) => void): void;
 }
 
 declare namespace sftp {
@@ -64,11 +71,17 @@ declare namespace sftp {
 
     interface FileStats {
         mode: number;
-        permissions?: any;
-        owner: number;
-        group: number;
+        uid: number;
+        gid: number;
         size: number;
         accessTime: number;
         modifyTime: number;
+        isDirectory: boolean;
+        isFile: boolean;
+        isBlockDevice: boolean;
+        isCharacterDevice: boolean;
+        isSymbolicLink: boolean;
+        isFIFO: boolean;
+        isSocket: boolean;
     }
 }
diff --git a/types/ssh2-sftp-client/ssh2-sftp-client-tests.ts b/types/ssh2-sftp-client/ssh2-sftp-client-tests.ts
index 2c3d12d2f6..44fe403bce 100644
--- a/types/ssh2-sftp-client/ssh2-sftp-client-tests.ts
+++ b/types/ssh2-sftp-client/ssh2-sftp-client-tests.ts
@@ -16,6 +16,8 @@ client.exists('/remote/path').then(() => null);
 
 client.stat('/remote/path').then(() => null);
 
+client.realPath('/remote/path').then(() => null);
+
 client.get('/remote/path').then(() => null);
 
 client.fastGet('/remote/path', 'local/path').then(() => null);
@@ -26,6 +28,8 @@ client.put(fs.createReadStream('Hello World'), '/remote/path').then(() => null);
 
 client.fastPut('/remote/path', 'local/path').then(() => null);
 
+client.cwd().then(() => null);
+
 client.mkdir('/remote/path/dir', true).then(() => null);
 client.rmdir('/remote/path/dir', true).then(() => null);