diff --git a/packages/in_app_purchase/CHANGELOG.md b/packages/in_app_purchase/CHANGELOG.md
index be8d4d5c9cf4..32f56899826e 100644
--- a/packages/in_app_purchase/CHANGELOG.md
+++ b/packages/in_app_purchase/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.2.0+3
+
+* Update the `README.md` so that the code samples compile with the latest Flutter/Dart version.
+
 ## 0.2.0+2
 
 * Fix a google_play_connection purchase update listener regression introduced in 0.2.0+1.
diff --git a/packages/in_app_purchase/README.md b/packages/in_app_purchase/README.md
index 24584850474c..3b8d1a4df04c 100644
--- a/packages/in_app_purchase/README.md
+++ b/packages/in_app_purchase/README.md
@@ -62,7 +62,7 @@ class _MyAppState extends State<MyApp> {
   void initState() {
     final Stream purchaseUpdates =
         InAppPurchaseConnection.instance.purchaseUpdatedStream;
-    _subscription = purchaseUpdates.listen((List<PurchaseDetails> purchases) {
+    _subscription = purchaseUpdates.listen((purchases) {
       _handlePurchaseUpdates(purchases);
     });
     super.initState();
@@ -87,9 +87,9 @@ if (!available) {
 ### Loading products for sale
 
 ```dart
-const Set<String> _kIds = <String>['product1', 'product2'].toSet();
+Set<String> _kIds = <String>['product1', 'product2'].toSet();
 final ProductDetailsResponse response = await InAppPurchaseConnection.instance.queryProductDetails(_kIds);
-if (!response.notFoundIds.isEmpty()) {
+if (!response.notFoundIDs.isEmpty) {
     // Handle the error.
 }
 List<ProductDetails> products = response.productDetails;
@@ -102,7 +102,7 @@ final QueryPurchaseDetailsResponse response = await InAppPurchaseConnection.inst
 if (response.error != null) {
     // Handle the error.
 }
-for (PurchaseDetails purchase : repsonse.pastPurchases) {
+for (PurchaseDetails purchase in response.pastPurchases) {
     _verifyPurchase(purchase);  // Verify the purchase following the best practices for each storefront.
     _deliverPurchase(purchase); // Deliver the purchase to the user in your app.
     if (Platform.isIOS) {
diff --git a/packages/in_app_purchase/pubspec.yaml b/packages/in_app_purchase/pubspec.yaml
index 75d187389ea5..3987990e1c77 100644
--- a/packages/in_app_purchase/pubspec.yaml
+++ b/packages/in_app_purchase/pubspec.yaml
@@ -2,7 +2,7 @@ name: in_app_purchase
 description: A Flutter plugin for in-app purchases. Exposes APIs for making in-app purchases through the App Store and Google Play.
 author:  Flutter Team <flutter-dev@googlegroups.com>
 homepage: https://github.com/flutter/plugins/tree/master/packages/in_app_purchase
-version: 0.2.0+2
+version: 0.2.0+3
 
 dependencies:
   async: ^2.0.8