diff --git a/index.d.ts b/index.d.ts
index 49e7eb5..9384be3 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,4 +1,11 @@
 export default class FakeXMLHttpRequest extends XMLHttpRequest {
+  method: string;
+  url: string;
+  async: boolean;
+  username: string;
+  password: string;
+  requestHeaders: Object;
+
   /*
     Forces a response on to the FakeXMLHttpRequest object.
 
diff --git a/package.json b/package.json
index 144807a..624d49a 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
   "description": "test infrastructure for a fake XMLHttpRequest object",
   "main": "fake_xml_http_request.js",
   "module": "./src/fake-xml-http-request.js",
+  "types": "index.d.ts",
   "repository": "https://github.com/trek/FakeXMLHttpRequest.git",
   "scripts": {
     "test": "esperanto -i src/fake-xml-http-request.js -t umd -b -n FakeXMLHttpRequest -o fake_xml_http_request.js && ./node_modules/karma/bin/karma start --single-run --browsers PhantomJS"