diff --git a/gateway-js/src/make-fetch-happen.d.ts b/gateway-js/src/make-fetch-happen.d.ts
deleted file mode 100644
index 88ed260e0..000000000
--- a/gateway-js/src/make-fetch-happen.d.ts
+++ /dev/null
@@ -1,53 +0,0 @@
-declare module 'make-fetch-happen' {
-  import {
-    Response,
-    Request,
-    RequestInfo,
-    RequestInit,
-  } from 'apollo-server-env';
-
-  // If adding to these options, they should mirror those from `make-fetch-happen`
-  // @see: https://github.com/npm/make-fetch-happen/#extra-options
-  export interface FetcherOptions {
-    cacheManager?: string | CacheManager;
-    // @see: https://www.npmjs.com/package/retry#retrytimeoutsoptions
-    retry?:
-      | boolean
-      | number
-      | {
-          //  The maximum amount of times to retry the operation. Default is 10. Seting this to 1 means do it once, then retry it once
-          retries?: number;
-          // The exponential factor to use. Default is 2.
-          factor?: number;
-          // The number of milliseconds before starting the first retry. Default is 1000.
-          minTimeout?: number;
-          // The maximum number of milliseconds between two retries. Default is Infinity.
-          maxTimeout?: number;
-          // Randomizes the timeouts by multiplying with a factor between 1 to 2. Default is false.
-          randomize?: boolean;
-        };
-    onRetry?(): void;
-  }
-
-  export interface CacheManager {
-    delete(req: Request): Promise<Boolean>;
-    put(req: Request, res: Response): Promise<Response>;
-    match(req: Request): Promise<Response | undefined>;
-  }
-
-  /**
-   * This is an augmentation of the fetch function types provided by `apollo-server-env`
-   * @see: https://git.io/JvBwX
-   */
-  export interface Fetcher {
-    (input?: RequestInfo, init?: RequestInit & FetcherOptions): Promise<
-      Response
-    >;
-  }
-
-  let fetch: Fetcher & {
-    defaults(opts?: RequestInit & FetcherOptions): Fetcher;
-  };
-
-  export default fetch;
-}