[in_app_purchase_android] fix version for 'add payment proxy': pull/4055 (#4071)

diff --git a/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md b/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md
index fefdecd..9066fab 100644
--- a/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md
+++ b/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md
@@ -1,6 +1,9 @@
-## 0.1.3
+## 0.1.3+1
 
 * Add payment proxy.
+
+## 0.1.3
+
 * Added support for isFeatureSupported in the BillingClientWrapper and in InAppPurchaseAndroidPlatformAddition.
 
 ## 0.1.2
diff --git a/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml b/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
index 58069b0..ad06d85 100644
--- a/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: An implementation for the Android platform of the Flutter `in_app_purchase` plugin. This uses the Android BillingClient APIs.
 repository: https://github.com/flutter/plugins/tree/master/packages/in_app_purchase/in_app_purchase_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+in_app_purchase%22
-version: 0.1.3
+version: 0.1.3+1
 
 environment:
   sdk: ">=2.12.0 <3.0.0"