diff --git a/README.md b/README.md
index 4d6402e..a0af08a 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,8 @@ dependencies {
 }
 ```
 
-`LATEST_VERSION` is  [![JitPack](https://jitpack.io/v/Kyash/validatable-textinput-layout.svg)](https://jitpack.io/#Kyash/validatable-textinput-layout)
+`LATEST_VERSION` is  [![JitPack](https://jitpack.io/v/Kyash/validatable-textinput-layout.svg)](https://jitpack.io/#Kyash/validatable-textinput-layout) which supports AndroidX.
+If you still use Support Library, please use version `0.3.0`.
 
 ## Basic usage
 You can use as same as `TextInputLayout` in layout xml.
diff --git a/build.gradle b/build.gradle
index aac1d71..0bb78d3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
-buildscript {
-    apply from: "${rootDir.absolutePath}/versions.gradle"
+import dependencies.Depends
 
+buildscript {
     repositories {
         google()
         jcenter()
@@ -10,11 +10,11 @@ buildscript {
         maven { url "https://jitpack.io" }
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:$versions.gradleBuildTool"
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$versions.kotlin"
-        classpath "gradle.plugin.org.jlleitschuh.gradle:ktlint-gradle:$versions.ktlintGradle"
-        classpath "io.fabric.tools:gradle:$versions.fabricGradleTool"
-        classpath "com.github.dcendents:android-maven-gradle-plugin:$versions.mavenGradle"
+        classpath Depends.GradlePlugin.android
+        classpath Depends.GradlePlugin.kotlin
+        classpath Depends.GradlePlugin.ktlint
+        classpath Depends.GradlePlugin.fabric
+        classpath Depends.GradlePlugin.androidMaven
     }
 }
 
diff --git a/buildSrc/.gitignore b/buildSrc/.gitignore
new file mode 100644
index 0000000..42afabf
--- /dev/null
+++ b/buildSrc/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
new file mode 100644
index 0000000..15b61a2
--- /dev/null
+++ b/buildSrc/build.gradle.kts
@@ -0,0 +1,6 @@
+plugins {
+    `kotlin-dsl`
+}
+repositories {
+    jcenter()
+}
\ No newline at end of file
diff --git a/buildSrc/src/main/java/dependencies/Depends.kt b/buildSrc/src/main/java/dependencies/Depends.kt
new file mode 100644
index 0000000..104e7f4
--- /dev/null
+++ b/buildSrc/src/main/java/dependencies/Depends.kt
@@ -0,0 +1,65 @@
+package dependencies
+
+@Suppress("unused")
+object Depends {
+    object GradlePlugin {
+        const val android = "com.android.tools.build:gradle:3.2.1"
+        const val kotlin = "org.jetbrains.kotlin:kotlin-gradle-plugin:${Kotlin.version}"
+        const val ktlint = "gradle.plugin.org.jlleitschuh.gradle:ktlint-gradle:3.0.0"
+        const val fabric = "io.fabric.tools:gradle:1.25.4"
+        const val androidMaven = "com.github.dcendents:android-maven-gradle-plugin:2.0"
+    }
+
+    object Test {
+        const val junit = "junit:junit:4.12"
+        const val testRunner = "androidx.test:runner:1.1.0"
+        const val mockitoKotlin = "com.nhaarman.mockitokotlin2:mockito-kotlin:2.0.0"
+        const val robolectric = "org.robolectric:robolectric:3.5.1"
+
+        object Espresso {
+            const val core = "androidx.test.espresso:espresso-core:3.1.0-alpha4"
+            const val intents = "androidx.test.espresso:espresso-intents:3.1.0-alpha4"
+        }
+    }
+
+    object AndroidX {
+        const val appCompat = "androidx.appcompat:appcompat:1.0.0"
+        const val recyclerView = "androidx.recyclerview:recyclerview:1.0.0"
+        const val cardView = "androidx.cardview:cardview:1.0.0"
+        const val design = "com.google.android.material:material:1.1.0-alpha01"
+    }
+
+    object Kotlin {
+        const val version = "1.3.11"
+        const val stdlib = "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$version"
+    }
+
+    object Stetho {
+        const val version = "1.5.0"
+        const val core = "com.facebook.stetho:stetho:$version"
+        const val okhttp = "com.facebook.stetho:stetho-okhttp3:$version"
+    }
+
+    object Crashlytics {
+        const val core = "com.crashlytics.sdk.android:crashlytics:2.8.0@aar"
+    }
+
+    object Retrofit {
+        private const val version = "2.5.0"
+        const val core = "com.squareup.retrofit2:retrofit:$version"
+        const val converterMoshi = "com.squareup.retrofit2:converter-moshi:$version"
+        const val adapterRxJava2 = "com.squareup.retrofit2:adapter-rxjava2:$version"
+    }
+
+    object Kotshi {
+        private const val version = "1.0.6"
+        const val api = "se.ansman.kotshi:api:$version"
+        const val compiler = "se.ansman.kotshi:compiler:$version"
+    }
+
+    object Rx {
+        const val RxJava = "io.reactivex.rxjava2:rxjava:2.2.4"
+        const val RxAndroid = "io.reactivex.rxjava2:rxandroid:2.1.0"
+        const val RxKotlin = "io.reactivex.rxjava2:rxkotlin:2.3.0"
+    }
+}
\ No newline at end of file
diff --git a/buildSrc/src/main/java/dependencies/Versions.kt b/buildSrc/src/main/java/dependencies/Versions.kt
new file mode 100644
index 0000000..da540ce
--- /dev/null
+++ b/buildSrc/src/main/java/dependencies/Versions.kt
@@ -0,0 +1,7 @@
+package dependencies
+
+private object Versions {
+    val androidCompileSdkVersion = 28
+    val androidTargetSdkVersion = 28
+    val androidMinSdkVersion = 19
+}
\ No newline at end of file
diff --git a/example/build.gradle b/example/build.gradle
index 32c7e15..9d1639b 100644
--- a/example/build.gradle
+++ b/example/build.gradle
@@ -1,21 +1,25 @@
+import dependencies.Depends
+import dependencies.Versions
+
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-kapt'
 apply plugin: "org.jlleitschuh.gradle.ktlint"
 apply plugin: 'io.fabric'
+apply from: "${rootDir.absolutePath}/versions.gradle"
 
-def versionMajor = 0
-def versionMinor = 1
+def versionMajor = 1
+def versionMinor = 0
 def versionPatch = 0
 
 android {
-    compileSdkVersion versions.compileSdk
+    compileSdkVersion Versions.androidCompileSdkVersion
     dataBinding.enabled = true
 
     defaultConfig {
         applicationId "co.kyash.vtl.sample"
-        minSdkVersion versions.minSdk
-        targetSdkVersion versions.targetSdk
+        minSdkVersion Versions.androidMinSdkVersion
+        targetSdkVersion Versions.androidTargetSdkVersion
         versionCode versionMajor * 10000 + versionMinor * 100 + versionPatch
         versionName "$versionMajor.$versionMinor.$versionPatch"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -58,43 +62,42 @@ dependencies {
     implementation project(':library')
 
     //==================== Kotlin ====================
-    implementation depends.kotlin.stdlib
+    implementation Depends.Kotlin.stdlib
 
     //==================== Support Library ====================
-    implementation depends.support.appcompat
-    implementation depends.support.design
-    implementation depends.support.cardview
+    implementation Depends.AndroidX.appCompat
+    implementation Depends.AndroidX.design
+    implementation Depends.AndroidX.cardView
 
     //==================== Network ====================
-    implementation depends.retrofit.core
-    implementation depends.retrofit.converterMoshi
-    implementation depends.retrofit.adapterRxJava2
+    implementation Depends.Retrofit.core
+    implementation Depends.Retrofit.converterMoshi
+    implementation Depends.Retrofit.adapterRxJava2
 
     //==================== Structure ====================
-    implementation depends.kotshi.api
-    kapt depends.kotshi.compiler
+    implementation Depends.Kotshi.api
+    kapt Depends.Kotshi.compiler
 
-    implementation depends.rxjava2.core
-    implementation depends.rxjava2.android
-    implementation depends.rxjava2.kotlin
+    implementation Depends.Rx.RxJava
+    implementation Depends.Rx.RxAndroid
+    implementation Depends.Rx.RxKotlin
 
     //==================== Debug ====================
-    implementation(depends.crashlytics) {
+    implementation(Depends.Crashlytics.core) {
         transitive = true
     }
 
     //==================== Debug ====================
-    debugImplementation depends.stetho.core
-    debugImplementation depends.stetho.okhttp3
+    implementation Depends.Stetho.core
+    implementation Depends.Stetho.okhttp
 
     //==================== Test ====================
-    testImplementation depends.junit
-    testImplementation depends.mockitoKotlin
-    testImplementation depends.robolectric.core
-    androidTestImplementation depends.supporttest.runner
-    androidTestImplementation depends.supporttest.espresso
-    androidTestImplementation depends.espresso.core
-    androidTestImplementation depends.espresso.intents
+    testImplementation Depends.Test.junit
+    testImplementation Depends.Test.mockitoKotlin
+    testImplementation Depends.Test.robolectric
+    androidTestImplementation Depends.Test.testRunner
+    androidTestImplementation Depends.Test.Espresso.core
+    androidTestImplementation Depends.Test.Espresso.intents
 }
 
 ktlint {
diff --git a/example/src/main/java/co/kyash/vtl/example/MainActivity.kt b/example/src/main/java/co/kyash/vtl/example/MainActivity.kt
index 29c2be6..2b70b40 100644
--- a/example/src/main/java/co/kyash/vtl/example/MainActivity.kt
+++ b/example/src/main/java/co/kyash/vtl/example/MainActivity.kt
@@ -1,11 +1,11 @@
 package co.kyash.vtl.example
 
-import android.databinding.DataBindingUtil
 import android.os.Bundle
-import android.support.v7.app.AppCompatActivity
 import android.util.Log
 import android.view.View
 import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import androidx.databinding.DataBindingUtil
 import co.kyash.vtl.ValidatableView
 import co.kyash.vtl.example.api.MaterialDesignColorsApi
 import co.kyash.vtl.example.databinding.ActivityMainBinding
@@ -42,12 +42,12 @@ class MainActivity : AppCompatActivity() {
     private val compositeDisposable = CompositeDisposable()
 
     private val api = Retrofit.Builder()
-            .baseUrl("https://raw.githubusercontent.com")
-            .addConverterFactory(MoshiConverterFactory.create(Moshi.Builder().build()))
-            .addCallAdapterFactory(RxJava2CallAdapterFactory.createAsync())
-            .client(OkHttpClient.Builder().addNetworkInterceptor(StethoInterceptor()).build())
-            .build()
-            .create(MaterialDesignColorsApi::class.java)
+        .baseUrl("https://raw.githubusercontent.com")
+        .addConverterFactory(MoshiConverterFactory.create(Moshi.Builder().build()))
+        .addCallAdapterFactory(RxJava2CallAdapterFactory.createAsync())
+        .client(OkHttpClient.Builder().addNetworkInterceptor(StethoInterceptor()).build())
+        .build()
+        .create(MaterialDesignColorsApi::class.java)
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -65,16 +65,16 @@ class MainActivity : AppCompatActivity() {
     private fun initValidators() {
         // Example 1
         validatableViewsForTriggerTextChanged.addAll(arrayOf(
-                binding.firstName.register(RequiredValidator(getString(R.string.validation_error_required))),
-                binding.lastName.register(RequiredValidator(getString(R.string.validation_error_required))),
-                binding.email.register(EmailValidator(getString(R.string.validation_error_email))),
-                binding.numberOnly.register(NumberOnlyValidator(getString(R.string.validation_error_number_only))),
-                binding.asciiOnly.register(AsciiOnlyValidator(getString(R.string.validation_error_ascii_only)))
+            binding.firstName.register(RequiredValidator(getString(R.string.validation_error_required))),
+            binding.lastName.register(RequiredValidator(getString(R.string.validation_error_required))),
+            binding.email.register(EmailValidator(getString(R.string.validation_error_email))),
+            binding.numberOnly.register(NumberOnlyValidator(getString(R.string.validation_error_number_only))),
+            binding.asciiOnly.register(AsciiOnlyValidator(getString(R.string.validation_error_ascii_only)))
         ))
 
         // Example 2
         validatableViewsForTriggerFocusChanged.addAll(arrayOf(
-                binding.email2.register(EmailValidator(getString(R.string.validation_error_email)))
+            binding.email2.register(EmailValidator(getString(R.string.validation_error_email)))
         ))
 
         // Example 3
@@ -82,16 +82,16 @@ class MainActivity : AppCompatActivity() {
 
         // Example 4
         validatableViewsForButtonEnable.addAll(arrayOf(
-                binding.firstName2.register(RequiredValidator(getString(R.string.validation_error_required))),
-                binding.lastName2.register(RequiredValidator(getString(R.string.validation_error_required)))
+            binding.firstName2.register(RequiredValidator(getString(R.string.validation_error_required))),
+            binding.lastName2.register(RequiredValidator(getString(R.string.validation_error_required)))
         ))
         val validations: List<Flowable<Any>> = validatableViewsForButtonEnable.flatMap { it.validationFlowables }
         Flowable.zip(validations) { Any() }
-                .subscribeOn(Schedulers.computation())
-                .observeOn(AndroidSchedulers.mainThread())
-                .doOnError({ binding.submit3.isEnabled = false })
-                .retry() // non-terminated stream
-                .subscribe({ binding.submit3.isEnabled = true }, { })
+            .subscribeOn(Schedulers.computation())
+            .observeOn(AndroidSchedulers.mainThread())
+            .doOnError({ binding.submit3.isEnabled = false })
+            .retry() // non-terminated stream
+            .subscribe({ binding.submit3.isEnabled = true }, { })
     }
 
 
@@ -113,16 +113,16 @@ class MainActivity : AppCompatActivity() {
         compositeDisposable.clear()
 
         compositeDisposable.add(
-                Completable.mergeDelayError(validations)
-                        .subscribeOn(Schedulers.computation())
-                        .observeOn(AndroidSchedulers.mainThread())
-                        .subscribe({
-                            Log.d("MainActivity", "Validation cleared.")
-                            Toast.makeText(this, R.string.validation_success, Toast.LENGTH_SHORT).show()
-                        }, { throwable ->
-                            Log.e("MainActivity", "Validation error occurred.", throwable)
-                            Toast.makeText(this, R.string.validation_error_occurred, Toast.LENGTH_SHORT).show()
-                        })
+            Completable.mergeDelayError(validations)
+                .subscribeOn(Schedulers.computation())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({
+                    Log.d("MainActivity", "Validation cleared.")
+                    Toast.makeText(this, R.string.validation_success, Toast.LENGTH_SHORT).show()
+                }, { throwable ->
+                    Log.e("MainActivity", "Validation error occurred.", throwable)
+                    Toast.makeText(this, R.string.validation_error_occurred, Toast.LENGTH_SHORT).show()
+                })
         )
     }
 
diff --git a/example/src/main/res/layout/activity_main.xml b/example/src/main/res/layout/activity_main.xml
index 6f77bf7..ab82701 100644
--- a/example/src/main/res/layout/activity_main.xml
+++ b/example/src/main/res/layout/activity_main.xml
@@ -10,7 +10,7 @@
         android:layout_height="match_parent"
         android:orientation="vertical">
 
-        <android.support.v7.widget.Toolbar
+        <androidx.appcompat.widget.Toolbar
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="@color/theme"
@@ -34,7 +34,7 @@
                     style="@style/Title"
                     android:text="@string/trigger_text_change" />
 
-                <android.support.v7.widget.CardView
+                <androidx.cardview.widget.CardView
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:layout_marginTop="@dimen/space_16dp">
@@ -43,12 +43,12 @@
                         android:layout_width="match_parent"
                         android:layout_height="match_parent"
                         android:orientation="vertical"
-                        android:paddingBottom="@dimen/space_16dp"
-                        android:paddingEnd="@dimen/space_16dp"
+                        android:paddingStart="@dimen/space_16dp"
                         android:paddingLeft="@dimen/space_16dp"
+                        android:paddingTop="@dimen/space_8dp"
+                        android:paddingEnd="@dimen/space_16dp"
                         android:paddingRight="@dimen/space_16dp"
-                        android:paddingStart="@dimen/space_16dp"
-                        android:paddingTop="@dimen/space_8dp">
+                        android:paddingBottom="@dimen/space_16dp">
 
                         <!-- First name -->
                         <co.kyash.vtl.ValidatableTextInputLayout
@@ -126,14 +126,14 @@
 
                     </LinearLayout>
 
-                </android.support.v7.widget.CardView>
+                </androidx.cardview.widget.CardView>
 
                 <TextView
                     style="@style/Title"
                     android:layout_marginTop="@dimen/space_32dp"
                     android:text="@string/trigger_focus_change" />
 
-                <android.support.v7.widget.CardView
+                <androidx.cardview.widget.CardView
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:layout_marginTop="@dimen/space_16dp">
@@ -142,12 +142,12 @@
                         android:layout_width="match_parent"
                         android:layout_height="match_parent"
                         android:orientation="vertical"
-                        android:paddingBottom="@dimen/space_16dp"
-                        android:paddingEnd="@dimen/space_16dp"
+                        android:paddingStart="@dimen/space_16dp"
                         android:paddingLeft="@dimen/space_16dp"
+                        android:paddingTop="@dimen/space_8dp"
+                        android:paddingEnd="@dimen/space_16dp"
                         android:paddingRight="@dimen/space_16dp"
-                        android:paddingStart="@dimen/space_16dp"
-                        android:paddingTop="@dimen/space_8dp">
+                        android:paddingBottom="@dimen/space_16dp">
 
                         <!-- Email -->
                         <co.kyash.vtl.ValidatableTextInputLayout
@@ -172,7 +172,7 @@
 
                     </LinearLayout>
 
-                </android.support.v7.widget.CardView>
+                </androidx.cardview.widget.CardView>
 
 
                 <TextView
@@ -185,7 +185,7 @@
                     android:layout_marginTop="@dimen/space_8dp"
                     android:text="@string/validator_colors_description" />
 
-                <android.support.v7.widget.CardView
+                <androidx.cardview.widget.CardView
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:layout_marginTop="@dimen/space_16dp">
@@ -194,12 +194,12 @@
                         android:layout_width="match_parent"
                         android:layout_height="match_parent"
                         android:orientation="vertical"
-                        android:paddingBottom="@dimen/space_16dp"
-                        android:paddingEnd="@dimen/space_16dp"
+                        android:paddingStart="@dimen/space_16dp"
                         android:paddingLeft="@dimen/space_16dp"
+                        android:paddingTop="@dimen/space_8dp"
+                        android:paddingEnd="@dimen/space_16dp"
                         android:paddingRight="@dimen/space_16dp"
-                        android:paddingStart="@dimen/space_16dp"
-                        android:paddingTop="@dimen/space_8dp">
+                        android:paddingBottom="@dimen/space_16dp">
 
                         <co.kyash.vtl.ValidatableTextInputLayout
                             android:id="@+id/colors"
@@ -215,7 +215,7 @@
 
                     </LinearLayout>
 
-                </android.support.v7.widget.CardView>
+                </androidx.cardview.widget.CardView>
 
                 <TextView
                     style="@style/Title"
@@ -227,7 +227,7 @@
                     android:layout_marginTop="@dimen/space_8dp"
                     android:text="@string/change_button_enabled_description" />
 
-                <android.support.v7.widget.CardView
+                <androidx.cardview.widget.CardView
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:layout_marginTop="@dimen/space_16dp">
@@ -236,12 +236,12 @@
                         android:layout_width="match_parent"
                         android:layout_height="match_parent"
                         android:orientation="vertical"
-                        android:paddingBottom="@dimen/space_16dp"
-                        android:paddingEnd="@dimen/space_16dp"
+                        android:paddingStart="@dimen/space_16dp"
                         android:paddingLeft="@dimen/space_16dp"
+                        android:paddingTop="@dimen/space_8dp"
+                        android:paddingEnd="@dimen/space_16dp"
                         android:paddingRight="@dimen/space_16dp"
-                        android:paddingStart="@dimen/space_16dp"
-                        android:paddingTop="@dimen/space_8dp">
+                        android:paddingBottom="@dimen/space_16dp">
 
                         <!-- Email -->
                         <co.kyash.vtl.ValidatableTextInputLayout
@@ -280,7 +280,7 @@
 
                     </LinearLayout>
 
-                </android.support.v7.widget.CardView>
+                </androidx.cardview.widget.CardView>
 
             </LinearLayout>
 
diff --git a/example/src/test/java/co/kyash/vtl/example/validators/MaterialDesignColorsValidatorTest.kt b/example/src/test/java/co/kyash/vtl/example/validators/MaterialDesignColorsValidatorTest.kt
index 1bb9e3c..a764a7a 100644
--- a/example/src/test/java/co/kyash/vtl/example/validators/MaterialDesignColorsValidatorTest.kt
+++ b/example/src/test/java/co/kyash/vtl/example/validators/MaterialDesignColorsValidatorTest.kt
@@ -4,8 +4,8 @@ import android.content.Context
 import co.kyash.vtl.example.api.MaterialDesignColorsApi
 import co.kyash.vtl.example.testing.RxImmediateSchedulerRule
 import co.kyash.vtl.validators.VtlValidator
-import com.nhaarman.mockito_kotlin.doReturn
-import com.nhaarman.mockito_kotlin.mock
+import com.nhaarman.mockitokotlin2.doReturn
+import com.nhaarman.mockitokotlin2.mock
 import io.reactivex.Single
 import org.junit.Before
 import org.junit.Ignore
@@ -18,23 +18,23 @@ import org.robolectric.RuntimeEnvironment
 @Suppress("unused")
 @RunWith(ParameterizedRobolectricTestRunner::class)
 class MaterialDesignColorsValidatorTest(
-        private val text: String?,
-        private val errorMessage: String?
+    private val text: String?,
+    private val errorMessage: String?
 ) {
 
     companion object {
-        private val ERROR_MESSAGE = "This is not Material design color"
+        private const val ERROR_MESSAGE = "This is not Material design color"
 
         @JvmStatic
         @ParameterizedRobolectricTestRunner.Parameters
         fun data(): List<Array<out Any?>> {
             return listOf(
-                    arrayOf("Gold", ERROR_MESSAGE),
-                    arrayOf("Blue Red", ERROR_MESSAGE),
-                    arrayOf("Blue ", null),
-                    arrayOf(" Blue", null),
-                    arrayOf("Blue", null),
-                    arrayOf("Red", null)
+                arrayOf("Gold", ERROR_MESSAGE),
+                arrayOf("Blue Red", ERROR_MESSAGE),
+                arrayOf("Blue ", null),
+                arrayOf(" Blue", null),
+                arrayOf("Blue", null),
+                arrayOf("Red", null)
             )
         }
     }
diff --git a/gradle.properties b/gradle.properties
index 3163c1a..1c46fe6 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,2 +1,4 @@
 org.gradle.jvmargs=-Xmx1536m
-android.databinding.enableV2=true
\ No newline at end of file
+android.databinding.enableV2=true
+android.useAndroidX=true
+android.enableJetifier=true
\ No newline at end of file
diff --git a/library/build.gradle b/library/build.gradle
index a0a8e73..459cd61 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -1,20 +1,23 @@
+import dependencies.Depends
+import dependencies.Versions
+
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 apply plugin: 'com.github.dcendents.android-maven'
 
-def versionMajor = 0
-def versionMinor = 3
+def versionMajor = 1
+def versionMinor = 0
 def versionPatch = 0
 
 group = 'co.kyash'
 version = "$versionMajor.$versionMinor.$versionPatch"
 
 android {
-    compileSdkVersion versions.compileSdk
+    compileSdkVersion Versions.androidCompileSdkVersion
 
     defaultConfig {
-        minSdkVersion versions.minSdk
-        targetSdkVersion versions.targetSdk
+        minSdkVersion Versions.androidMinSdkVersion
+        targetSdkVersion Versions.androidTargetSdkVersion
         versionCode versionMajor * 10000 + versionMinor * 100 + versionPatch
         versionName "$versionMajor.$versionMinor.$versionPatch"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -33,19 +36,19 @@ android {
 
 dependencies {
     //==================== Kotlin ====================
-    implementation depends.kotlin.stdlib
+    implementation Depends.Kotlin.stdlib
 
     //==================== Support Library ====================
-    implementation depends.support.appcompat
-    implementation depends.support.design
+    implementation Depends.AndroidX.appCompat
+    implementation Depends.AndroidX.design
 
     //==================== Structure ====================
-    implementation depends.rxjava2.core
+    implementation Depends.Rx.RxJava
 
     //==================== Test ====================
-    testImplementation depends.junit
-    testImplementation depends.mockitoKotlin
-    testImplementation depends.robolectric.core
+    testImplementation Depends.Test.junit
+    testImplementation Depends.Test.mockitoKotlin
+    testImplementation Depends.Test.robolectric
 }
 
 // build a jar with source files
diff --git a/library/src/main/java/co/kyash/vtl/ValidatableTextInputLayout.kt b/library/src/main/java/co/kyash/vtl/ValidatableTextInputLayout.kt
index bd929e7..1cdbbf6 100644
--- a/library/src/main/java/co/kyash/vtl/ValidatableTextInputLayout.kt
+++ b/library/src/main/java/co/kyash/vtl/ValidatableTextInputLayout.kt
@@ -3,7 +3,6 @@ package co.kyash.vtl
 import android.content.Context
 import android.os.Handler
 import android.os.Looper
-import android.support.design.widget.TextInputLayout
 import android.text.Editable
 import android.text.TextUtils
 import android.text.TextWatcher
@@ -12,6 +11,7 @@ import android.view.View
 import android.view.View.OnFocusChangeListener
 import android.view.ViewGroup
 import co.kyash.vtl.validators.VtlValidator
+import com.google.android.material.textfield.TextInputLayout
 import io.reactivex.BackpressureStrategy
 import io.reactivex.Completable
 import io.reactivex.Flowable
@@ -23,9 +23,9 @@ import io.reactivex.schedulers.Schedulers
 import java.util.concurrent.TimeUnit
 
 class ValidatableTextInputLayout @JvmOverloads constructor(
-        context: Context,
-        attrs: AttributeSet? = null,
-        defStyleAttr: Int = 0
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = 0
 ) : TextInputLayout(context, attrs, defStyleAttr), ValidatableView {
 
     override val validationFlowables = ArrayList<Flowable<Any>>()
@@ -89,18 +89,18 @@ class ValidatableTextInputLayout @JvmOverloads constructor(
                     shouldValidateOnTextChangedOnce = false
                     compositeDisposable.clear()
                     compositeDisposable.add(
-                            Flowable.zip(validationFlowables) { Any() }
-                                    .doOnError({ this.showErrorMessage(it) })
-                                    .retry() // non-terminated stream
-                                    .subscribeOn(Schedulers.computation())
-                                    .subscribe({ clearErrorMessage() }, {})
+                        Flowable.zip(validationFlowables) { Any() }
+                            .doOnError({ this.showErrorMessage(it) })
+                            .retry() // non-terminated stream
+                            .subscribeOn(Schedulers.computation())
+                            .subscribe({ clearErrorMessage() }, {})
                     )
                 }
             } else {
                 if (shouldValidateOnFocusChanged) {
                     compositeDisposable.clear()
                     compositeDisposable.add(
-                            validateAsCompletable().subscribe(Functions.EMPTY_ACTION, Consumer<Throwable> {})
+                        validateAsCompletable().subscribe(Functions.EMPTY_ACTION, Consumer<Throwable> {})
                     )
                 }
             }
@@ -164,9 +164,9 @@ class ValidatableTextInputLayout @JvmOverloads constructor(
         }
 
         return Completable.mergeDelayError(validations)
-                .doOnComplete { clearErrorMessage() }
-                .doOnError { showErrorMessage(it) }
-                .subscribeOn(Schedulers.computation())
+            .doOnComplete { clearErrorMessage() }
+            .doOnError { showErrorMessage(it) }
+            .subscribeOn(Schedulers.computation())
     }
 
     fun getText(): String {
@@ -193,14 +193,14 @@ class ValidatableTextInputLayout @JvmOverloads constructor(
 
         this.validators.mapTo(validationFlowables) {
             textProcessor.onBackpressureDrop()
-                    .throttleLast(validationInterval, TimeUnit.MILLISECONDS)
-                    // hack to emit an event to `onNext` when completable is completed.
-                    .flatMap<Any> { x ->
-                        it.validateAsCompletable(context, x)
-                                .toSingleDefault(Any())
-                                .toObservable()
-                                .toFlowable(BackpressureStrategy.BUFFER)
-                    }
+                .throttleLast(validationInterval, TimeUnit.MILLISECONDS)
+                // hack to emit an event to `onNext` when completable is completed.
+                .flatMap<Any> { x ->
+                    it.validateAsCompletable(context, x)
+                        .toSingleDefault(Any())
+                        .toObservable()
+                        .toFlowable(BackpressureStrategy.BUFFER)
+                }
         }
         return this
     }