diff --git a/README.md b/README.md
index 6f1b8e2..41a6784 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@
   new AsyncSimpleWorker().run();
 }
 
-class AsyncSimpleWorker extends SyncWorkerLoop {
+class AsyncSimpleWorker extends AsyncWorkerLoop {
   /// Must return a [Future<WorkResponse>], since this is an
   /// [AsyncWorkerLoop].
   Future<WorkResponse> performRequest(WorkRequest request) async {