diff --git a/types/apollo-upload-client/apollo-upload-client-tests.ts b/types/apollo-upload-client/apollo-upload-client-tests.ts
index 4db60bfaf3..3018b5a42e 100644
--- a/types/apollo-upload-client/apollo-upload-client-tests.ts
+++ b/types/apollo-upload-client/apollo-upload-client-tests.ts
@@ -1,16 +1,50 @@
-import { createUploadLink, ReactNativeFile } from "apollo-upload-client";
+import {
+    UploadLinkOptions,
+    createUploadLink,
+    formDataAppendFile,
+    ReactNativeFile,
+    isExtractableFile,
+} from 'apollo-upload-client';
 
+// ==============================================================================
+// UploadLinkOptions
+// ==============================================================================
+const uploadLinkOptions: UploadLinkOptions = {
+    uri: 'http://localhost',
+    isExtractableFile,
+    formDataAppendFile,
+    useGETForQueries: true,
+    fetch: (uri, options) => fetch(`http://localhost/${uri}`, options),
+    fetchOptions: { method: 'GET' },
+    headers: { special: 'Special header value' },
+    includeExtensions: true,
+    credentials: 'beepboop',
+};
+
+// ==============================================================================
+// createUploadLink
+// ==============================================================================
+createUploadLink(uploadLinkOptions);
+
+// ==============================================================================
+// formDataAppendFile
+// ==============================================================================
+const form: HTMLFormElement | undefined = undefined;
+const formData = new FormData(form);
+const fieldName = 'field name';
+const file = new Blob();
+formDataAppendFile(formData, fieldName, file);
+
+// ==============================================================================
+// ReactNativeFile
+// ==============================================================================
 new ReactNativeFile({
-    name: "its coming home",
-    type: "its coming",
+    name: 'its coming home',
+    type: 'its coming',
     uri: "football's coming home",
 });
 
-createUploadLink({
-    fetch: (uri, options) => fetch(`http://localhost/${uri}`, options),
-    fetchOptions: { method: "GET" },
-    headers: { special: "Special header value" },
-    includeExtensions: true,
-    uri: "http://localhost",
-    credentials: "beepboop",
-});
+// ==============================================================================
+// isExtractableFile
+// ==============================================================================
+isExtractableFile('');
diff --git a/types/apollo-upload-client/index.d.ts b/types/apollo-upload-client/index.d.ts
index b219b84510..d992decf41 100644
--- a/types/apollo-upload-client/index.d.ts
+++ b/types/apollo-upload-client/index.d.ts
@@ -1,22 +1,52 @@
-// Type definitions for apollo-upload-client 8.1
+// Type definitions for apollo-upload-client 14.1
 // Project: https://github.com/jaydenseric/apollo-upload-client#readme
-// Definitions by: Edward Sammut Alessi <https://github.com/Slessi>
+// Definitions by: Edward Sammut Alessi <https://github.com/Slessi>, tyankatsu <https://github.com/tyankatsu0105>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 3.1
+// TypeScript Version: 3.6
 
-import { ApolloLink } from "apollo-link";
-import { HttpOptions } from "apollo-link-http-common";
+// ==============================================================================
+// imports
+// ==============================================================================
 
-export { ReactNativeFile } from "extract-files";
+import { ApolloLink } from '@apollo/client/core';
+import { HttpOptions } from '@apollo/client/link/http';
+import { isExtractableFile, ExtractableFile } from 'extract-files';
+
+// ==============================================================================
+// declare
+// ==============================================================================
 
 declare global {
     interface GlobalFetch {
-        fetch: WindowOrWorkerGlobalScope["fetch"];
+        fetch: WindowOrWorkerGlobalScope['fetch'];
     }
 }
 
+// ==============================================================================
+// types
+// ==============================================================================
+
+export type UploadLinkOptions = HttpOptions &
+    Partial<{
+        isExtractableFile: typeof isExtractableFile;
+        formDataAppendFile: typeof formDataAppendFile;
+    }>;
+
+// ==============================================================================
+// export
+// ==============================================================================
+
+export { ReactNativeFile, isExtractableFile } from 'extract-files';
+
 /**
- * `createUploadLink` options match `createHttpLink` options
- * @param linkOptions `HttpOptions`
+ * Creates a [terminating Apollo Link](https://www.apollographql.com/docs/link/overview/#terminating-links) capable of file uploads.
+ * @see https://github.com/jaydenseric/apollo-upload-client#function-createuploadlink
  */
-export function createUploadLink(linkOptions?: HttpOptions): ApolloLink;
+export function createUploadLink(uploadLinkOptions?: UploadLinkOptions): ApolloLink;
+
+/**
+ * The default implementation for [`createUploadLink`](https://github.com/jaydenseric/apollo-upload-client#function-createuploadlink) `options.formDataAppendFile`
+ * that uses the standard [`FormData.append`](https://developer.mozilla.org/en-US/docs/Web/API/FormData/append) method.
+ * @see https://github.com/jaydenseric/apollo-upload-client#function-formdataappendfile
+ */
+export function formDataAppendFile(formData: FormData, fieldName: string, file: ExtractableFile): void;
diff --git a/types/apollo-upload-client/package.json b/types/apollo-upload-client/package.json
index 6f942a3b01..e0d191f260 100644
--- a/types/apollo-upload-client/package.json
+++ b/types/apollo-upload-client/package.json
@@ -1,8 +1,7 @@
 {
     "private": true,
     "dependencies": {
-        "apollo-link": "^1.2.12",
-        "apollo-link-http-common": "^0.2.4",
-        "graphql": "^14.5.3"
+        "@apollo/client": "^3.1.3",
+        "graphql": "^15.3.0"
     }
 }
diff --git a/types/apollo-upload-client/tsconfig.json b/types/apollo-upload-client/tsconfig.json
index a78e75500c..60b83ed89e 100644
--- a/types/apollo-upload-client/tsconfig.json
+++ b/types/apollo-upload-client/tsconfig.json
@@ -16,7 +16,8 @@
         ],
         "types": [],
         "noEmit": true,
-        "forceConsistentCasingInFileNames": true
+        "forceConsistentCasingInFileNames": true,
+        "esModuleInterop": true
     },
     "files": [
         "index.d.ts",