diff --git a/types/google-apps-script/google-apps-script-tests.ts b/types/google-apps-script/google-apps-script-tests.ts
index 2c2c74cbc9..a6a3ac8437 100644
--- a/types/google-apps-script/google-apps-script-tests.ts
+++ b/types/google-apps-script/google-apps-script-tests.ts
@@ -25,3 +25,14 @@ function createAndSendDocument() {
 // Regression
 ScriptApp.getService().getUrl();
 CalendarApp.GuestStatus.NO;
+
+// test for URLFetchRequestOptions.payload
+import URLFetchRequestOptions = GoogleAppsScript.URL_Fetch.URLFetchRequestOptions;
+const postTest = (payload: Object): string => {
+  const url = 'http://httpbin.org/post';
+  const params: URLFetchRequestOptions = {
+    method: 'post',
+    payload: payload
+  };
+  return UrlFetchApp.fetch(url, params).getContentText();
+};
\ No newline at end of file
diff --git a/types/google-apps-script/google-apps-script.url-fetch.d.ts b/types/google-apps-script/google-apps-script.url-fetch.d.ts
index cd43670167..28cc744672 100644
--- a/types/google-apps-script/google-apps-script.url-fetch.d.ts
+++ b/types/google-apps-script/google-apps-script.url-fetch.d.ts
@@ -1,6 +1,7 @@
-// Type definitions for Google Apps Script 2018-07-11
+// Type definitions for Google Apps Script 2018-08-08
 // Project: https://developers.google.com/apps-script/
 // Definitions by: motemen <https://github.com/motemen/>
+//                 takoyaki9n <https://github.com/takoyaki9n>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference path="google-apps-script.types.d.ts" />
@@ -47,7 +48,7 @@ declare namespace GoogleAppsScript {
        * payload. It can be a string, a byte array, or a JavaScript object. A JavaScript object will be
        * interpretted as a map of form field names to values, where the values can be either strings or blobs.
        */
-      payload?: string;
+      payload?: string | object | Base.Blob;
 
       /**
        * Deprecated. This instructs fetch to resolve the specified URL within the intranet linked to your