diff --git a/types/fetch-mock/fetch-mock-tests.ts b/types/fetch-mock/fetch-mock-tests.ts
index c9b1737a47..02e360026e 100644
--- a/types/fetch-mock/fetch-mock-tests.ts
+++ b/types/fetch-mock/fetch-mock-tests.ts
@@ -1,4 +1,5 @@
 import * as fetchMock from "fetch-mock";
+import { MockResponse } from "fetch-mock";
 
 fetchMock.mock("http://test.com", 200);
 fetchMock.mock(/test\.com/, 200);
@@ -65,3 +66,6 @@ const myMatcher: fetchMock.MockMatcherFunction = (
   url: string,
   opts: fetchMock.MockRequest
 ) => true;
+
+fetchMock.flush().then(resolved => resolved.forEach(console.log));
+fetchMock.flush().catch(r => r);
diff --git a/types/fetch-mock/index.d.ts b/types/fetch-mock/index.d.ts
index f1c109bb53..4b89b1decd 100644
--- a/types/fetch-mock/index.d.ts
+++ b/types/fetch-mock/index.d.ts
@@ -1,6 +1,9 @@
-// Type definitions for fetch-mock 5.8
+// Type definitions for fetch-mock 5.12
 // Project: https://github.com/wheresrhys/fetch-mock
-// Definitions by: Alexey Svetliakov <https://github.com/asvetliakov>, Tamir Duberstein <https://github.com/tamird>, Risto Keravuori <https://github.com/merrywhether>
+// Definitions by: Alexey Svetliakov <https://github.com/asvetliakov>
+//                 Tamir Duberstein <https://github.com/tamird>
+//                 Risto Keravuori <https://github.com/merrywhether>
+//                 Chris Sinclair <https://github.com/chrissinclair>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.2
 
@@ -333,6 +336,12 @@ declare namespace fetchMock {
          */
         reset(): this;
 
+        /**
+         * Returns a promise that resolves once all fetches handled by fetch-mock
+         * have resolved.
+         */
+        flush(): Promise<MockResponse[]>;
+
         /**
          * Returns all calls to fetch, grouped by whether fetch-mock matched
          * them or not.