diff --git a/flutter_appauth/CHANGELOG.md b/flutter_appauth/CHANGELOG.md
index 5318dad7..e7b7bd9c 100644
--- a/flutter_appauth/CHANGELOG.md
+++ b/flutter_appauth/CHANGELOG.md
@@ -1,3 +1,10 @@
+## 0.9.0
+
+* Bumped dependency on `flutter_appauth_platform_interface`
+* [iOS] The `preferEphemeralSession` property has been added to the `AuthorizationRequest` and `AuthorizationTokenRequest` classes. This enables authorization requests to be done a in private session that won't share cookies and other data with the user's regular browser. This property only works when run on iOS versions 13 and above
+* **BREAKING CHANGE** bumping the `flutter_appauth_platform_interface` dependency includes the removal of the `toMap` method from all classes. These methods were used internally by plugin and thus have been removed
+* **BREAKING CHANGE** Bumped Gradle plugin to 3.6.3
+
 ## 0.8.3
 
 * [Android] Fixed an issue where a `NullPointerException` could occur when too many operations are started at one time. Thanks to the PR from [Josh Burton](https://github.com/athornz)
diff --git a/flutter_appauth/android/build.gradle b/flutter_appauth/android/build.gradle
index 7592cbfc..06bbf16c 100644
--- a/flutter_appauth/android/build.gradle
+++ b/flutter_appauth/android/build.gradle
@@ -8,7 +8,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.3'
+        classpath 'com.android.tools.build:gradle:3.6.3'
     }
 }
 
diff --git a/flutter_appauth/example/android/build.gradle b/flutter_appauth/example/android/build.gradle
index 6de37289..11e3d090 100644
--- a/flutter_appauth/example/android/build.gradle
+++ b/flutter_appauth/example/android/build.gradle
@@ -5,7 +5,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.3'
+        classpath 'com.android.tools.build:gradle:3.6.3'
     }
 }
 
diff --git a/flutter_appauth/example/android/gradle/wrapper/gradle-wrapper.properties b/flutter_appauth/example/android/gradle/wrapper/gradle-wrapper.properties
index 888b36b5..cda9e74e 100644
--- a/flutter_appauth/example/android/gradle/wrapper/gradle-wrapper.properties
+++ b/flutter_appauth/example/android/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Fri Oct 11 22:31:00 AEDT 2019
+#Thu May 28 22:16:04 AEST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip
diff --git a/flutter_appauth/example/pubspec.yaml b/flutter_appauth/example/pubspec.yaml
index 1c52cc14..7512d12b 100644
--- a/flutter_appauth/example/pubspec.yaml
+++ b/flutter_appauth/example/pubspec.yaml
@@ -4,7 +4,7 @@ version: 1.0.0+1
 publish_to: 'none'
 
 environment:
-  sdk: ">=2.3.0 <3.0.0"
+  sdk: ">=2.6.0 <3.0.0"
 
 dependencies:
   flutter:
diff --git a/flutter_appauth/pubspec.yaml b/flutter_appauth/pubspec.yaml
index 907226aa..8b0e192c 100644
--- a/flutter_appauth/pubspec.yaml
+++ b/flutter_appauth/pubspec.yaml
@@ -1,16 +1,16 @@
 name: flutter_appauth
 description: This plugin provides an abstraction around the Android and iOS AppAuth SDKs so it can be used to communicate with OAuth 2.0 and OpenID Connect providers
-version: 0.8.4
+version: 0.9.0
 homepage: https://github.com/MaikuB/flutter_appauth/tree/master/flutter_appauth
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: ">=2.6.0 <3.0.0"
   flutter: ">=1.12.13+hotfix.5"
 
 dependencies:
   flutter:
     sdk: flutter
-  flutter_appauth_platform_interface: ^1.0.3
+  flutter_appauth_platform_interface: ^2.0.0
 
 flutter:
   plugin: