diff --git a/.gitignore b/.gitignore
index 2f74e22..4225de6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,19 @@
+# Flutter/Dart/Pub related
 .DS_Store
 .dart_tool/
 
+.flutter-plugins
 .packages
 .pub/
 pubspec.lock
 
 build/
 
-.idea/workspace.xml
\ No newline at end of file
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# Visual Studio Code related
+.vscode/
diff --git a/.idea/libraries/Dart_SDK.xml b/.idea/libraries/Dart_SDK.xml
deleted file mode 100644
index a12d548..0000000
--- a/.idea/libraries/Dart_SDK.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<component name="libraryTable">
-  <library name="Dart SDK">
-    <CLASSES>
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/async" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/collection" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/convert" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/core" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/developer" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/html" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/io" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/isolate" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/math" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/mirrors" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/typed_data" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
deleted file mode 100644
index b4f5d54..0000000
--- a/.idea/libraries/Flutter_Plugins.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter Plugins" type="FlutterPluginsLibraryType">
-    <CLASSES>
-      <root url="file://$PROJECT_DIR$" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/streams_channel-0.2.1" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/.idea/libraries/Flutter_for_Android.xml b/.idea/libraries/Flutter_for_Android.xml
deleted file mode 100644
index 6e6c9a4..0000000
--- a/.idea/libraries/Flutter_for_Android.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter for Android">
-    <CLASSES>
-      <root url="jar:///usr/local/dev/flutter/bin/cache/artifacts/engine/android-arm/flutter.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
diff --git a/.idea/misc.xml b/.idea/misc.xml
deleted file mode 100644
index ac5bd6f..0000000
--- a/.idea/misc.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Android API 27 Platform" project-jdk-type="Android SDK" />
-</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
deleted file mode 100644
index cb9a7ec..0000000
--- a/.idea/modules.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/beacons.iml" filepath="$PROJECT_DIR$/beacons.iml" />
-      <module fileurl="file://$PROJECT_DIR$/beacons_android.iml" filepath="$PROJECT_DIR$/beacons_android.iml" />
-    </modules>
-  </component>
-</project>
diff --git a/.idea/runConfigurations/example_lib_main_dart.xml b/.idea/runConfigurations/example_lib_main_dart.xml
deleted file mode 100644
index 5fd9159..0000000
--- a/.idea/runConfigurations/example_lib_main_dart.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="example/lib/main.dart" type="FlutterRunConfigurationType" factoryName="Flutter">
-    <option name="filePath" value="$PROJECT_DIR$/example/lib/main.dart" />
-    <method />
-  </configuration>
-</component>
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6d2e310..8ce0316 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## [0.3.1]
+
+* Fix: flutter compatibility with v1.2.1
+	* updated deprecated kotlin dependencies
+	* updated android support library
+
 ## [0.3.0]
 
 * Fix: Background monitoring on Android
diff --git a/android/build.gradle b/android/build.gradle
index a0e4026..8d06f43 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -2,7 +2,7 @@ group 'io.intheloup.beacons'
 version '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '1.2.41'
+    ext.kotlin_version = '1.2.71'
     repositories {
         google()
         jcenter()
@@ -25,7 +25,7 @@ apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion 28
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
@@ -46,11 +46,11 @@ kotlin {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:0.22.5"
 
-    implementation "com.android.support:support-compat:27.1.1"
-    implementation "com.android.support:support-core-utils:27.1.1"
+    implementation "com.android.support:support-compat:28.0.0"
+    implementation "com.android.support:support-core-utils:28.0.0"
     implementation "org.altbeacon:android-beacon-library:2.14"
     implementation "com.squareup.moshi:moshi:1.5.0"
 
diff --git a/example/.gitignore b/example/.gitignore
index dee655c..4225de6 100644
--- a/example/.gitignore
+++ b/example/.gitignore
@@ -1,9 +1,19 @@
+# Flutter/Dart/Pub related
 .DS_Store
 .dart_tool/
 
+.flutter-plugins
 .packages
 .pub/
+pubspec.lock
 
 build/
 
-.flutter-plugins
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# Visual Studio Code related
+.vscode/
diff --git a/example/.idea/libraries/Dart_SDK.xml b/example/.idea/libraries/Dart_SDK.xml
deleted file mode 100644
index a12d548..0000000
--- a/example/.idea/libraries/Dart_SDK.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<component name="libraryTable">
-  <library name="Dart SDK">
-    <CLASSES>
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/async" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/collection" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/convert" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/core" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/developer" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/html" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/io" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/isolate" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/math" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/mirrors" />
-      <root url="file:///usr/local/dev/flutter/bin/cache/dart-sdk/lib/typed_data" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/example/.idea/libraries/Flutter_for_Android.xml b/example/.idea/libraries/Flutter_for_Android.xml
deleted file mode 100644
index 6e6c9a4..0000000
--- a/example/.idea/libraries/Flutter_for_Android.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter for Android">
-    <CLASSES>
-      <root url="jar:///usr/local/dev/flutter/bin/cache/artifacts/engine/android-arm/flutter.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
diff --git a/example/.idea/modules.xml b/example/.idea/modules.xml
deleted file mode 100644
index 602cb73..0000000
--- a/example/.idea/modules.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/beacons_example.iml" filepath="$PROJECT_DIR$/beacons_example.iml" />
-      <module fileurl="file://$PROJECT_DIR$/beacons_example_android.iml" filepath="$PROJECT_DIR$/beacons_example_android.iml" />
-    </modules>
-  </component>
-</project>
diff --git a/example/.idea/runConfigurations/main_dart.xml b/example/.idea/runConfigurations/main_dart.xml
deleted file mode 100644
index aab7b5c..0000000
--- a/example/.idea/runConfigurations/main_dart.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="main.dart" type="FlutterRunConfigurationType" factoryName="Flutter">
-    <option name="filePath" value="$PROJECT_DIR$/lib/main.dart" />
-    <method />
-  </configuration>
-</component>
\ No newline at end of file
diff --git a/example/.idea/workspace.xml b/example/.idea/workspace.xml
deleted file mode 100644
index 5b3388c..0000000
--- a/example/.idea/workspace.xml
+++ /dev/null
@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="FileEditorManager">
-    <leaf>
-      <file leaf-file-name="main.dart" pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/lib/main.dart">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="0">
-              <caret line="0" column="0" lean-forward="false" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
-            </state>
-          </provider>
-        </entry>
-      </file>
-    </leaf>
-  </component>
-  <component name="ToolWindowManager">
-    <editor active="true" />
-    <layout>
-      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
-    </layout>
-  </component>
-  <component name="ProjectView">
-    <navigator currentView="ProjectPane" proportions="" version="1">
-    </navigator>
-    <panes>
-      <pane id="ProjectPane">
-        <option name="show-excluded-files" value="false" />
-      </pane>
-    </panes>
-  </component>
-  <component name="PropertiesComponent">
-    <property name="last_opened_file_path" value="$PROJECT_DIR$" />
-    <property name="dart.analysis.tool.window.force.activate" value="true" />
-    <property name="show.migrate.to.gradle.popup" value="false" />
-  </component>
-</project>
diff --git a/example/android/.idea/caches/build_file_checksums.ser b/example/android/.idea/caches/build_file_checksums.ser
deleted file mode 100644
index 7191e41..0000000
Binary files a/example/android/.idea/caches/build_file_checksums.ser and /dev/null differ
diff --git a/example/android/.idea/codeStyles/Project.xml b/example/android/.idea/codeStyles/Project.xml
deleted file mode 100644
index 30aa626..0000000
--- a/example/android/.idea/codeStyles/Project.xml
+++ /dev/null
@@ -1,29 +0,0 @@
-<component name="ProjectCodeStyleConfiguration">
-  <code_scheme name="Project" version="173">
-    <Objective-C-extensions>
-      <file>
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Import" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Macro" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Typedef" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Enum" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Constant" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Global" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Struct" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="FunctionPredecl" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Function" />
-      </file>
-      <class>
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Property" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Synthesize" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InitMethod" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="StaticMethod" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InstanceMethod" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="DeallocMethod" />
-      </class>
-      <extensions>
-        <pair source="cpp" header="h" fileNamingConvention="NONE" />
-        <pair source="c" header="h" fileNamingConvention="NONE" />
-      </extensions>
-    </Objective-C-extensions>
-  </code_scheme>
-</component>
\ No newline at end of file
diff --git a/example/android/.idea/gradle.xml b/example/android/.idea/gradle.xml
deleted file mode 100644
index 05d0870..0000000
--- a/example/android/.idea/gradle.xml
+++ /dev/null
@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="distributionType" value="DEFAULT_WRAPPED" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="modules">
-          <set>
-            <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/flutter_local_notifications-0.2.9/android" />
-            <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/streams_channel-0.2.1/android" />
-            <option value="$PROJECT_DIR$/../../android" />
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-          </set>
-        </option>
-        <option name="resolveModulePerSourceSet" value="false" />
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>
\ No newline at end of file
diff --git a/example/android/.idea/misc.xml b/example/android/.idea/misc.xml
deleted file mode 100644
index ac59544..0000000
--- a/example/android/.idea/misc.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="NullableNotNullManager">
-    <option name="myDefaultNullable" value="android.support.annotation.Nullable" />
-    <option name="myDefaultNotNull" value="android.support.annotation.NonNull" />
-    <option name="myNullables">
-      <value>
-        <list size="5">
-          <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.Nullable" />
-          <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nullable" />
-          <item index="2" class="java.lang.String" itemvalue="javax.annotation.CheckForNull" />
-          <item index="3" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.Nullable" />
-          <item index="4" class="java.lang.String" itemvalue="android.support.annotation.Nullable" />
-        </list>
-      </value>
-    </option>
-    <option name="myNotNulls">
-      <value>
-        <list size="4">
-          <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.NotNull" />
-          <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nonnull" />
-          <item index="2" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.NonNull" />
-          <item index="3" class="java.lang.String" itemvalue="android.support.annotation.NonNull" />
-        </list>
-      </value>
-    </option>
-  </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="JDK" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="Android" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/example/android/.idea/modules.xml b/example/android/.idea/modules.xml
deleted file mode 100644
index 0990a1a..0000000
--- a/example/android/.idea/modules.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/android.iml" filepath="$PROJECT_DIR$/android.iml" />
-      <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
-      <module fileurl="file://$PROJECT_DIR$/../../android/beacons.iml" filepath="$PROJECT_DIR$/../../android/beacons.iml" />
-      <module fileurl="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/flutter_local_notifications-0.2.9/android/flutter_local_notifications.iml" filepath="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/flutter_local_notifications-0.2.9/android/flutter_local_notifications.iml" />
-      <module fileurl="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/streams_channel-0.2.1/android/streams_channel.iml" filepath="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/streams_channel-0.2.1/android/streams_channel.iml" />
-    </modules>
-  </component>
-</project>
\ No newline at end of file
diff --git a/example/android/.idea/runConfigurations.xml b/example/android/.idea/runConfigurations.xml
deleted file mode 100644
index 7f68460..0000000
--- a/example/android/.idea/runConfigurations.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>
\ No newline at end of file
diff --git a/example/android/app/build.gradle b/example/android/app/build.gradle
index a5d0d22..1eb9dd3 100644
--- a/example/android/app/build.gradle
+++ b/example/android/app/build.gradle
@@ -16,7 +16,7 @@ apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion 28
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
@@ -30,7 +30,7 @@ android {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "io.intheloup.beaconsexample"
         minSdkVersion 16
-        targetSdkVersion 27
+        targetSdkVersion 28
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -50,7 +50,7 @@ flutter {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.1'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
diff --git a/example/android/build.gradle b/example/android/build.gradle
index 866932a..b6ae951 100644
--- a/example/android/build.gradle
+++ b/example/android/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.2.41'
+    ext.kotlin_version = '1.2.71'
     repositories {
         google()
         jcenter()
diff --git a/pubspec.yaml b/pubspec.yaml
index 3376197..72c7acd 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: beacons
 description: Flutter beacons plugin for iOS and Android.
-version: 0.3.0
+version: 0.3.1
 author: Loup Inc. <hello@intheloup.io>
 homepage: https://github.com/loup-v/beacons