diff --git a/android/build.gradle b/android/build.gradle
index 84f8497..6ca8f0e 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -2,14 +2,17 @@ group 'za.co.britehouse.flutter_microsoft_authentication'
 version '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '1.3.60'
+    ext.kotlin_version = '1.5.10'
     repositories {
         google()
         jcenter()
+        maven {
+            url 'https://pkgs.dev.azure.com/MicrosoftDeviceSDK/DuoSDK-Public/_packaging/Duo-SDK-Feed/maven/v1'
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.2'
+        classpath 'com.android.tools.build:gradle:4.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "org.jetbrains.kotlin:kotlin-serialization:$kotlin_version"
     }
@@ -19,6 +22,9 @@ rootProject.allprojects {
     repositories {
         google()
         jcenter()
+        maven {
+            url 'https://pkgs.dev.azure.com/MicrosoftDeviceSDK/DuoSDK-Public/_packaging/Duo-SDK-Feed/maven/v1'
+        }
     }
 }
 
@@ -27,7 +33,7 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlinx-serialization'
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 30
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
@@ -42,15 +48,15 @@ android {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.9.1"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.20.0"
     if (findProject(':msal') != null) {
         // For developer team only.
         localImplementation project(':msal')
-        externalImplementation 'com.microsoft.identity.client:msal:1.4.0'
+        externalImplementation 'com.microsoft.identity.client:msal:2.0.+'
     }
     else {
         // Downloads and Builds MSAL from maven central.
-        implementation 'com.microsoft.identity.client:msal:1.4.0'
+        implementation 'com.microsoft.identity.client:msal:2.0.+'
     }
 }
diff --git a/android/gradle/wrapper/gradle-wrapper.properties b/android/gradle/wrapper/gradle-wrapper.properties
index 019065d..297f2fe 100644
--- a/android/gradle/wrapper/gradle-wrapper.properties
+++ b/android/gradle/wrapper/gradle-wrapper.properties
@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-all.zip
diff --git a/android/src/main/kotlin/za/co/britehouse/flutter_microsoft_authentication/FlutterMicrosoftAuthenticationPlugin.kt b/android/src/main/kotlin/za/co/britehouse/flutter_microsoft_authentication/FlutterMicrosoftAuthenticationPlugin.kt
index 580de24..d7668ae 100644
--- a/android/src/main/kotlin/za/co/britehouse/flutter_microsoft_authentication/FlutterMicrosoftAuthenticationPlugin.kt
+++ b/android/src/main/kotlin/za/co/britehouse/flutter_microsoft_authentication/FlutterMicrosoftAuthenticationPlugin.kt
@@ -38,29 +38,10 @@ class FlutterMicrosoftAuthenticationPlugin: MethodCallHandler {
 
   override fun onMethodCall(call: MethodCall, result: Result) {
 
-    val scopesArg : ArrayList<String>? = call.argument("kScopes")
-    val scopes: Array<String>? = scopesArg?.toTypedArray()
-    val authority: String? = call.argument("kAuthority")
-    val configPath: String? = call.argument("configPath")
-
-
-    if (configPath == null) {
-      Log.d(TAG, "no config")
-      result.error("NO_CONFIG","Call must include a config file path", null)
-      return
-    }
-
-    if(scopes == null){
-      Log.d(TAG, "no scope")
-      result.error("NO_SCOPE","Call must include a scope", null)
-      return
-    }
-
-    if(authority == null){
-      Log.d(TAG,"error no authority")
-      result.error("NO_AUTHORITY", "Call must include an authority", null)
-      return
-    }
+    val scopesArg : ArrayList<String> = call.argument("scopes")!!
+    val scopes: Array<String> = scopesArg?.toTypedArray()!!
+    val authority: String = call.argument("authority")!!
+    val configPath: String = call.argument("configPath")!!
 
     when(call.method){
       "acquireTokenInteractively" -> acquireTokenInteractively(scopes, authority, result)
@@ -126,7 +107,7 @@ class FlutterMicrosoftAuthenticationPlugin: MethodCallHandler {
               }
 
               override fun onError(exception: MsalException) {
-                Log.e(TAG, exception.message)
+                Log.e(TAG, exception.message!!)
               }
             })
   }
@@ -158,7 +139,7 @@ class FlutterMicrosoftAuthenticationPlugin: MethodCallHandler {
       }
 
       override fun onError(exception: MsalException) {
-        Log.e(TAG, exception.message)
+        Log.e(TAG, exception.message!!)
         result.error("ERROR", exception.errorCode, null)
       }
     })
@@ -261,7 +242,7 @@ class FlutterMicrosoftAuthenticationPlugin: MethodCallHandler {
       }
 
       override fun onError(exception: MsalException) {
-        Log.e(TAG, exception.message)
+        Log.e(TAG, exception.message!!)
         result.error("MsalException", exception.message, null)
       }
     })
diff --git a/example/.flutter-plugins-dependencies b/example/.flutter-plugins-dependencies
index 00db9e0..51b56d2 100644
--- a/example/.flutter-plugins-dependencies
+++ b/example/.flutter-plugins-dependencies
@@ -1 +1 @@
-{"_info":"// This is a generated file; do not edit or check into version control.","dependencyGraph":[{"name":"flutter_microsoft_authentication","dependencies":[]}]}
\ No newline at end of file
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"flutter_microsoft_authentication","path":"C:\\\\Users\\\\crist\\\\Desktop\\\\GitHub\\\\flutter-microsoft-authentication\\\\","dependencies":[]}],"android":[{"name":"flutter_microsoft_authentication","path":"C:\\\\Users\\\\crist\\\\Desktop\\\\GitHub\\\\flutter-microsoft-authentication\\\\","dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"flutter_microsoft_authentication","dependencies":[]}],"date_created":"2021-05-26 12:55:26.478563","version":"2.2.0"}
\ No newline at end of file
diff --git a/example/android/app/build.gradle b/example/android/app/build.gradle
index 1aadb81..9d49060 100644
--- a/example/android/app/build.gradle
+++ b/example/android/app/build.gradle
@@ -26,7 +26,7 @@ apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 30
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
@@ -40,10 +40,9 @@ android {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "za.co.britehouse.flutter_microsoft_authentication_example"
         minSdkVersion 19
-        targetSdkVersion 28
+        targetSdkVersion 30
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
 
     buildTypes {
@@ -64,8 +63,5 @@ flutter {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
 }
diff --git a/example/android/app/src/debug/AndroidManifest.xml b/example/android/app/src/debug/AndroidManifest.xml
deleted file mode 100644
index 3c4c9e5..0000000
--- a/example/android/app/src/debug/AndroidManifest.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="za.co.britehouse.flutter_microsoft_authentication_example">
-    <!-- Flutter needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>
diff --git a/example/android/app/src/main/AndroidManifest.xml b/example/android/app/src/main/AndroidManifest.xml
index 74f3109..f1b4ba7 100644
--- a/example/android/app/src/main/AndroidManifest.xml
+++ b/example/android/app/src/main/AndroidManifest.xml
@@ -1,45 +1,42 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="za.co.britehouse.flutter_microsoft_authentication_example">
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
 
-    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
-         calls FlutterMain.startInitialization(this); in its onCreate method.
-         In most cases you can leave this as-is, but you if you want to provide
-         additional functionality it is fine to subclass or reimplement
-         FlutterApplication and put your custom class here. -->
     <application
-        android:name="io.flutter.app.FlutterApplication"
         android:label="flutter_microsoft_authentication_example"
         android:icon="@mipmap/ic_launcher">
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+
+        <activity
+            android:name="com.microsoft.identity.client.BrowserTabActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data
+                    android:scheme="msauth"
+                    android:host="za.co.britehouse.flutter_microsoft_authentication_example"
+                    android:path="/1wIqXSqBj7w+h11ZifsnqwgyKrY=" />
+            </intent-filter>
+        </activity>
+
         <activity
-            android:name=".MainActivity"
+            android:name="io.flutter.embedding.android.FlutterActivity"
             android:launchMode="singleTop"
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
             android:windowSoftInputMode="adjustResize">
-            <!-- This keeps the window background of the activity showing
-                 until Flutter renders its first frame. It can be removed if
-                 there is no splash screen (such as the default splash screen
-                 defined in @style/LaunchTheme). -->
-            <meta-data
-                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
-                android:value="true" />
+
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
 
-        <activity android:name="com.microsoft.identity.client.BrowserTabActivity">
-            <intent-filter>
-                <action android:name="android.intent.action.VIEW" />
-                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE" />
-                <data
-                    android:host="com.azuresamples.msalandroidkotlinapp"
-                    android:path="/1wIqXSqBj7w+h11ZifsnqwgyKrY="
-                    android:scheme="msauth" />
-            </intent-filter>
-        </activity>
+
     </application>
 </manifest>
diff --git a/example/android/app/src/main/kotlin/za/co/britehouse/flutter_microsoft_authentication_example/MainActivity.kt b/example/android/app/src/main/kotlin/za/co/britehouse/flutter_microsoft_authentication_example/MainActivity.kt
deleted file mode 100644
index c1f69c9..0000000
--- a/example/android/app/src/main/kotlin/za/co/britehouse/flutter_microsoft_authentication_example/MainActivity.kt
+++ /dev/null
@@ -1,14 +0,0 @@
-package za.co.britehouse.flutter_microsoft_authentication_example
-
-import android.os.Bundle
-
-import io.flutter.app.FlutterActivity
-import io.flutter.plugins.GeneratedPluginRegistrant
-
-class MainActivity: FlutterActivity() {
-  override fun onCreate(savedInstanceState: Bundle?) {
-    super.onCreate(savedInstanceState)
-    GeneratedPluginRegistrant.registerWith(this)
-  }
-
-}
diff --git a/example/android/app/src/profile/AndroidManifest.xml b/example/android/app/src/profile/AndroidManifest.xml
deleted file mode 100644
index 3c4c9e5..0000000
--- a/example/android/app/src/profile/AndroidManifest.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="za.co.britehouse.flutter_microsoft_authentication_example">
-    <!-- Flutter needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>
diff --git a/example/android/build.gradle b/example/android/build.gradle
index 6dd6141..8fc1df9 100644
--- a/example/android/build.gradle
+++ b/example/android/build.gradle
@@ -1,12 +1,12 @@
 buildscript {
-    ext.kotlin_version = '1.3.60'
+    ext.kotlin_version = '1.5.10'
     repositories {
         google()
         jcenter()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.0'
+        classpath 'com.android.tools.build:gradle:4.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
diff --git a/example/android/gradle.properties b/example/android/gradle.properties
index 1441b1d..9209e5d 100644
--- a/example/android/gradle.properties
+++ b/example/android/gradle.properties
@@ -1,3 +1,3 @@
 org.gradle.jvmargs=-Xmx1536M
-
 android.enableR8=true
+android.useAndroidX=true
\ No newline at end of file
diff --git a/example/android/gradle/wrapper/gradle-wrapper.properties b/example/android/gradle/wrapper/gradle-wrapper.properties
index 2819f02..b8793d3 100644
--- a/example/android/gradle/wrapper/gradle-wrapper.properties
+++ b/example/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-all.zip
diff --git a/example/lib/main.dart b/example/lib/main.dart
index 2305bd2..1a6e2e9 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -14,8 +14,7 @@ class MyApp extends StatefulWidget {
 }
 
 class _MyAppState extends State<MyApp> {
-
-  String _graphURI = "https://graph.microsoft.com/v1.0/me/";
+  String _graphURI = 'https://graph.microsoft.com/v1.0/me/';
 
   String _authToken = 'Unknown Auth Token';
   String _username = 'No Account';
@@ -28,10 +27,10 @@ class _MyAppState extends State<MyApp> {
     super.initState();
 
     fma = FlutterMicrosoftAuthentication(
-      kClientID: "<client-id>",
-      kAuthority: "https://login.microsoftonline.com/organizations",
-      kScopes: ["User.Read", "User.ReadBasic.All"],
-      androidConfigAssetPath: "assets/android_auth_config.json"
+      clientID: '<client-id>',
+      authority: 'https://login.microsoftonline.com/organizations',
+      scopes: ['User.Read', 'User.ReadBasic.All'],
+      androidConfigAssetPath: 'assets/android_auth_config.json',
     );
     print('INITIALIZED FMA');
   }
@@ -40,7 +39,7 @@ class _MyAppState extends State<MyApp> {
     String authToken;
     try {
       authToken = await this.fma.acquireTokenInteractively;
-    } on PlatformException catch(e) {
+    } on PlatformException catch (e) {
       authToken = 'Failed to get token.';
       print(e.message);
     }
@@ -53,7 +52,7 @@ class _MyAppState extends State<MyApp> {
     String authToken;
     try {
       authToken = await this.fma.acquireTokenSilently;
-    } on PlatformException catch(e) {
+    } on PlatformException catch (e) {
       authToken = 'Failed to get token silently.';
       print(e.message);
     }
@@ -66,7 +65,7 @@ class _MyAppState extends State<MyApp> {
     String authToken;
     try {
       authToken = await this.fma.signOut;
-    } on PlatformException catch(e) {
+    } on PlatformException catch (e) {
       authToken = 'Failed to sign out.';
       print(e.message);
     }
@@ -75,7 +74,7 @@ class _MyAppState extends State<MyApp> {
     });
   }
 
-  Future<String> _loadAccount() async {
+  Future<void> _loadAccount() async {
     String username = await this.fma.loadAccount;
     setState(() {
       _username = username;
@@ -83,9 +82,10 @@ class _MyAppState extends State<MyApp> {
   }
 
   _fetchMicrosoftProfile() async {
-    var response = await http.get(this._graphURI, headers: {
-      "Authorization": "Bearer " + this._authToken
-    });
+    var response = await http.get(
+      this._graphURI,
+      headers: {'Authorization': 'Bearer ' + this._authToken},
+    );
 
     setState(() {
       _msProfile = json.decode(response.body).toString();
@@ -96,39 +96,47 @@ class _MyAppState extends State<MyApp> {
   Widget build(BuildContext context) {
     return MaterialApp(
       home: Scaffold(
-        appBar: AppBar(
-          title: const Text('Microsoft Authentication'),
-        ),
-        body: SingleChildScrollView(
-          child: Container(
-            width: double.infinity,
-            padding: EdgeInsets.all(8),
-            child: Column(
-              mainAxisAlignment: MainAxisAlignment.start,
-              children: <Widget>[
-                RaisedButton( onPressed: _acquireTokenInteractively,
-                  child: Text('Acquire Token'),),
-                RaisedButton( onPressed: _acquireTokenSilently,
-                    child: Text('Acquire Token Silently')),
-                RaisedButton( onPressed: _signOut,
-                    child: Text('Sign Out')),
-                RaisedButton( onPressed: _fetchMicrosoftProfile,
-                    child: Text('Fetch Profile')),
-                if (Platform.isAndroid == true)
-                  RaisedButton( onPressed: _loadAccount,
-                      child: Text('Load account')),
-                SizedBox(height: 8,),
-                if (Platform.isAndroid == true)
-                  Text( "Username: $_username"),
-                SizedBox(height: 8,),
-                Text( "Profile: $_msProfile"),
-                SizedBox(height: 8,),
-                Text( "Token: $_authToken"),
-              ],
-            ),
+          appBar: AppBar(
+            title: const Text('Microsoft Authentication'),
           ),
-        )
-      ),
+          body: SingleChildScrollView(
+            child: Container(
+              width: double.infinity,
+              padding: EdgeInsets.all(8),
+              child: Column(
+                mainAxisAlignment: MainAxisAlignment.start,
+                children: <Widget>[
+                  ElevatedButton(
+                    onPressed: _acquireTokenInteractively,
+                    child: Text('Acquire Token'),
+                  ),
+                  ElevatedButton(
+                    onPressed: _acquireTokenSilently,
+                    child: Text('Acquire Token Silently'),
+                  ),
+                  ElevatedButton(
+                    onPressed: _signOut,
+                    child: Text('Sign Out'),
+                  ),
+                  ElevatedButton(
+                    onPressed: _fetchMicrosoftProfile,
+                    child: Text('Fetch Profile'),
+                  ),
+                  if (Platform.isAndroid)
+                    ElevatedButton(
+                      onPressed: _loadAccount,
+                      child: Text('Load account'),
+                    ),
+                  const SizedBox(height: 8),
+                  if (Platform.isAndroid) Text('Username: $_username'),
+                  const SizedBox(height: 8),
+                  Text('Profile: $_msProfile'),
+                  const SizedBox(height: 8),
+                  Text('Token: $_authToken'),
+                ],
+              ),
+            ),
+          )),
     );
   }
 }
diff --git a/example/pubspec.lock b/example/pubspec.lock
index bb45985..56549a7 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -1,62 +1,48 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  archive:
-    dependency: transitive
-    description:
-      name: archive
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.11"
-  args:
-    dependency: transitive
-    description:
-      name: args
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.5.2"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.4.0"
+    version: "2.6.1"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
-  charcode:
+    version: "2.1.0"
+  characters:
     dependency: transitive
     description:
-      name: charcode
+      name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.2"
-  collection:
+    version: "1.1.0"
+  charcode:
     dependency: transitive
     description:
-      name: collection
+      name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.11"
-  convert:
+    version: "1.2.0"
+  clock:
     dependency: transitive
     description:
-      name: convert
+      name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
-  crypto:
+    version: "1.1.0"
+  collection:
     dependency: transitive
     description:
-      name: crypto
+      name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.3"
+    version: "1.15.0"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -64,6 +50,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.1.2"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -75,7 +68,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.1.1"
+    version: "0.2.0"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -95,34 +88,27 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.1.3"
-  image:
-    dependency: transitive
-    description:
-      name: image
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.1.4"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.6"
+    version: "0.12.10"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.8"
+    version: "1.3.0"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.4"
+    version: "1.8.0"
   pedantic:
     dependency: transitive
     description:
@@ -130,20 +116,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.0+1"
-  petitparser:
-    dependency: transitive
-    description:
-      name: petitparser
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.4.0"
-  quiver:
-    dependency: transitive
-    description:
-      name: quiver
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.5"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -155,62 +127,55 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.5"
+    version: "1.8.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.3"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
+    version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.11"
+    version: "0.3.0"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.6"
+    version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
-  xml:
-    dependency: transitive
-    description:
-      name: xml
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "3.5.0"
+    version: "2.1.0"
 sdks:
-  dart: ">=2.4.0 <3.0.0"
+  dart: ">=2.12.0 <3.0.0"
diff --git a/example/pubspec.yaml b/example/pubspec.yaml
index 02c7d2d..29a56b6 100644
--- a/example/pubspec.yaml
+++ b/example/pubspec.yaml
@@ -3,7 +3,7 @@ description: Demonstrates how to use the flutter_microsoft_authentication plugin
 publish_to: 'none'
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: ">=2.2.2 <3.0.0"
 
 dependencies:
   flutter:
diff --git a/lib/flutter_microsoft_authentication.dart b/lib/flutter_microsoft_authentication.dart
index a1d4359..4718376 100644
--- a/lib/flutter_microsoft_authentication.dart
+++ b/lib/flutter_microsoft_authentication.dart
@@ -6,62 +6,67 @@ class FlutterMicrosoftAuthentication {
   static const MethodChannel _channel =
       const MethodChannel('flutter_microsoft_authentication');
 
-  List<String> _kScopes;
-  String _kClientID, _kAuthority;
-  String _androidConfigAssetPath;
+  final String clientID;
+  final String authority;
+  final List<String> scopes;
+  final String androidConfigAssetPath;
 
-  FlutterMicrosoftAuthentication(
-      {String kClientID,
-      String kAuthority,
-      List<String> kScopes,
-      String androidConfigAssetPath}) {
-    _kClientID = kClientID;
-    _kAuthority = kAuthority;
-    _kScopes = kScopes;
-    _androidConfigAssetPath = androidConfigAssetPath;
-
-    if (Platform.isAndroid)
-      _channel.invokeMethod("init", _createMethodcallArguments());
+  FlutterMicrosoftAuthentication({
+    required this.clientID,
+    required this.authority,
+    required this.scopes,
+    required this.androidConfigAssetPath,
+  }) {
+    if (Platform.isAndroid) {
+      _channel.invokeMethod('init', _createMethodcallArguments());
+    }
   }
 
   Map<String, dynamic> _createMethodcallArguments() {
-    var res = <String, dynamic>{
-      "kScopes": _kScopes,
-      "kClientID": _kClientID,
-      "kAuthority": _kAuthority
+    final args = <String, dynamic>{
+      'clientID': clientID,
+      'scopes': scopes,
+      'authority': authority
     };
-    if (Platform.isAndroid && _androidConfigAssetPath != null) {
-      res.addAll({"configPath": _androidConfigAssetPath});
+    if (Platform.isAndroid) {
+      args.addAll({'configPath': androidConfigAssetPath});
     }
-    print(res);
-    return res;
+    return args;
   }
 
   /// Acquire auth token with interactive flow.
   Future<String> get acquireTokenInteractively async {
     final String token = await _channel.invokeMethod(
-        'acquireTokenInteractively', _createMethodcallArguments());
+      'acquireTokenInteractively',
+      _createMethodcallArguments(),
+    );
     return token;
   }
 
   /// Acquire auth token silently.
   Future<String> get acquireTokenSilently async {
     final String token = await _channel.invokeMethod(
-        'acquireTokenSilently', _createMethodcallArguments());
+      'acquireTokenSilently',
+      _createMethodcallArguments(),
+    );
     return token;
   }
 
   /// Android only. Get username of current active account.
   Future<String> get loadAccount async {
     final result = await _channel.invokeMethod(
-        'loadAccount', _createMethodcallArguments());
+      'loadAccount',
+      _createMethodcallArguments(),
+    );
     return result;
   }
 
   /// Sign out of current active account.
   Future<String> get signOut async {
-    final String token =
-        await _channel.invokeMethod('signOut', _createMethodcallArguments());
+    final String token = await _channel.invokeMethod(
+      'signOut',
+      _createMethodcallArguments(),
+    );
     return token;
   }
 }
diff --git a/pubspec.lock b/pubspec.lock
index 67a7df1..ad6d1df 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -1,62 +1,55 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  archive:
-    dependency: transitive
-    description:
-      name: archive
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.11"
-  args:
-    dependency: transitive
-    description:
-      name: args
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.5.2"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.4.0"
+    version: "2.6.1"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
+    version: "2.1.0"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.2"
-  collection:
+    version: "1.2.0"
+  clock:
     dependency: transitive
     description:
-      name: collection
+      name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.11"
-  convert:
+    version: "1.1.0"
+  collection:
     dependency: transitive
     description:
-      name: convert
+      name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
-  crypto:
+    version: "1.15.0"
+  fake_async:
     dependency: transitive
     description:
-      name: crypto
+      name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.3"
+    version: "1.2.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -67,55 +60,27 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  image:
-    dependency: transitive
-    description:
-      name: image
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.1.4"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.6"
+    version: "0.12.10"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.8"
+    version: "1.3.0"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.4"
-  pedantic:
-    dependency: transitive
-    description:
-      name: pedantic
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.8.0+1"
-  petitparser:
-    dependency: transitive
-    description:
-      name: petitparser
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.4.0"
-  quiver:
-    dependency: transitive
-    description:
-      name: quiver
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.5"
+    version: "1.8.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -127,62 +92,55 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.5"
+    version: "1.8.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.3"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
+    version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.11"
+    version: "0.3.0"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.6"
+    version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
-  xml:
-    dependency: transitive
-    description:
-      name: xml
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "3.5.0"
+    version: "2.1.0"
 sdks:
-  dart: ">=2.4.0 <3.0.0"
+  dart: ">=2.12.0 <3.0.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 3559334..f83e3aa 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,10 +1,10 @@
 name: flutter_microsoft_authentication
 description: Flutter Wrapper for Microsoft Authentication Library to enable SSO across Android and iOS.
-version: 0.1.1
+version: 0.2.0
 homepage: https://github.com/BritehouseMobile/flutter-microsoft-authentication
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: ">=2.12.0 <3.0.0"
 
 dependencies:
   flutter:
@@ -14,46 +14,7 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
 
-# For information on the generic Dart part of this file, see the
-# following page: https://dart.dev/tools/pub/pubspec
-
-# The following section is specific to Flutter.
 flutter:
-  # This section identifies this Flutter project as a plugin project.
-  # The androidPackage and pluginClass identifiers should not ordinarily
-  # be modified. They are used by the tooling to maintain consistency when
-  # adding or updating assets for this project.
   plugin:
     androidPackage: za.co.britehouse.flutter_microsoft_authentication
-    pluginClass: FlutterMicrosoftAuthenticationPlugin
-
-  # To add assets to your plugin package, add an assets section, like this:
-  # assets:
-  #  - images/a_dot_burr.jpeg
-  #  - images/a_dot_ham.jpeg
-  #
-  # For details regarding assets in packages, see
-  # https://flutter.dev/assets-and-images/#from-packages
-  #
-  # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
-
-  # To add custom fonts to your plugin package, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700
-  #
-  # For details regarding fonts in packages, see
-  # https://flutter.dev/custom-fonts/#from-packages
+    pluginClass: FlutterMicrosoftAuthenticationPlugin
\ No newline at end of file