diff --git a/types/restify/index.d.ts b/types/restify/index.d.ts
index 5f7e0ccb21..a7781f933c 100644
--- a/types/restify/index.d.ts
+++ b/types/restify/index.d.ts
@@ -483,13 +483,14 @@ export interface Client {
     basicAuth(username: string, password: string): any;
 }
 
-export interface HttpClient extends Client {
+export interface HttpClient {
     get(opts?: string | { path?: string; [name: string]: any }, callback?: (err: any, req: Request) => void): any;
     head(opts?: string | { path?: string; [name: string]: any }, callback?: (err: any, req: Request) => void): any;
     post(opts?: string | { path?: string; [name: string]: any }, callback?: (err: any, req: Request) => void): any;
     put(opts?: string | { path?: string; [name: string]: any }, callback?: (err: any, req: Request) => void): any;
     patch(opts?: string | { path?: string; [name: string]: any }, callback?: (err: any, req: Request) => void): any;
     del(opts?: string | { path?: string; [name: string]: any }, callback?: (err: any, req: Request) => void): any;
+    basicAuth(username: string, password: string): any;
 }
 
 export interface ThrottleOptions {