diff --git a/.github/workflows/android.yml b/.github/workflows/android.yml
index 11310bc..3c25ed2 100644
--- a/.github/workflows/android.yml
+++ b/.github/workflows/android.yml
@@ -6,12 +6,16 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
+    - uses: actions/checkout@v4
+    - name: Set up JDK 17
+      uses: actions/setup-java@v4
       with:
-        java-version: 1.8
-    - uses: actions/cache@v1
+        distribution: 'adopt'
+        java-version: 17
+        cache: gradle
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v3
+    - uses: actions/cache@v4
       with:
         path: ~/.gradle/caches
         key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 387813f..db61f39 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -1,24 +1,25 @@
 plugins {
   id("com.android.application")
   kotlin("android")
-  kotlin("kapt")
+  id("com.google.devtools.ksp") version "1.9.22-1.0.17" apply false
 }
 
 android {
-  compileSdkVersion(29)
+  namespace = "net.pot8os.kotlintestsample"
+  compileSdk = 34
 
   defaultConfig {
     applicationId = "net.pot8os.kotlintestsample"
-    minSdkVersion(23)
-    targetSdkVersion(29)
+    minSdk = 23
+    targetSdk = 34
     versionCode = 1
     versionName = "1.0"
     testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
   }
 
   compileOptions {
-    sourceCompatibility = JavaVersion.VERSION_1_8
-    targetCompatibility = JavaVersion.VERSION_1_8
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
   }
 
   buildTypes {
@@ -40,13 +41,14 @@ android {
   }
 
   kotlinOptions {
-    jvmTarget = "1.8"
+    jvmTarget = "17"
   }
 
   buildFeatures.dataBinding = true
-
-  packagingOptions {
-    exclude("META-INF/proguard/androidx-annotations.pro")
+  packaging {
+    resources {
+      excludes += setOf("META-INF/proguard/androidx-annotations.pro")
+    }
   }
 
   testOptions {
@@ -67,5 +69,5 @@ dependencies {
 
 repositories {
   google()
-  jcenter()
+  mavenCentral()
 }
diff --git a/app/src/androidTest/kotlin/net/pot8os/kotlintestsample/InstrumentedCalculatorTest.kt b/app/src/androidTest/kotlin/net/pot8os/kotlintestsample/InstrumentedCalculatorTest.kt
index 1230c18..62256b6 100644
--- a/app/src/androidTest/kotlin/net/pot8os/kotlintestsample/InstrumentedCalculatorTest.kt
+++ b/app/src/androidTest/kotlin/net/pot8os/kotlintestsample/InstrumentedCalculatorTest.kt
@@ -1,7 +1,7 @@
 package net.pot8os.kotlintestsample
 
 import androidx.test.ext.junit.runners.AndroidJUnit4
-import net.pot8s.kotlintestsample.CalculatorSpec
+import net.pot8os.kotlintestsample.CalculatorSpec
 import org.junit.runner.RunWith
 
 /**
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 6b317da..7712933 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,20 +1,20 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-  package="net.pot8os.kotlintestsample">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
-  <application
-    android:allowBackup="true"
-    android:icon="@mipmap/ic_launcher"
-    android:label="@string/app_name"
-    android:supportsRtl="true"
-    android:theme="@style/Theme.MyApp">
-    <activity android:name="net.pot8os.kotlintestsample.MainActivity">
-      <intent-filter>
-        <action android:name="android.intent.action.MAIN" />
-
-        <category android:name="android.intent.category.LAUNCHER" />
-      </intent-filter>
-    </activity>
-  </application>
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.MyApp">
+        <activity
+            android:name="net.pot8os.kotlintestsample.MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
 
 </manifest>
diff --git a/app/src/test/kotlin/net/pot8os/kotlintestsample/RobolectricCalculatorTest.kt b/app/src/test/kotlin/net/pot8os/kotlintestsample/RobolectricCalculatorTest.kt
index 6eba2f2..069f629 100644
--- a/app/src/test/kotlin/net/pot8os/kotlintestsample/RobolectricCalculatorTest.kt
+++ b/app/src/test/kotlin/net/pot8os/kotlintestsample/RobolectricCalculatorTest.kt
@@ -2,7 +2,6 @@ package net.pot8os.kotlintestsample
 
 import android.os.Build
 import androidx.test.ext.junit.runners.AndroidJUnit4
-import net.pot8s.kotlintestsample.CalculatorSpec
 import org.junit.runner.RunWith
 import org.robolectric.annotation.Config
 
@@ -11,6 +10,6 @@ import org.robolectric.annotation.Config
  */
 @RunWith(AndroidJUnit4::class)
 @Config(
-  sdk = [Build.VERSION_CODES.P]
+  sdk = [Build.VERSION_CODES.UPSIDE_DOWN_CAKE]
 )
 class RobolectricCalculatorTest : CalculatorSpec()
diff --git a/app/src/testShared/kotlin/CalculatorSpec.kt b/app/src/testShared/kotlin/CalculatorSpec.kt
new file mode 100644
index 0000000..82e38c3
--- /dev/null
+++ b/app/src/testShared/kotlin/CalculatorSpec.kt
@@ -0,0 +1,75 @@
+package net.pot8os.kotlintestsample
+
+import androidx.fragment.app.testing.launchFragmentInContainer
+import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.action.ViewActions.click
+import androidx.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.espresso.matcher.ViewMatchers.withText
+import org.junit.Before
+import org.junit.Test
+import java.text.DecimalFormat
+
+/**
+ * @author So Nakamura, 2020-Feb-15
+ */
+abstract class CalculatorSpec {
+
+    @Before
+    fun setup() {
+        launchFragmentInContainer<CalculatorFragment>(themeResId = R.style.Theme_MyApp)
+    }
+
+    @Test
+    fun testSum() {
+        onView(withId(R.id.button_1)).perform(click())
+        onView(withId(R.id.button_2)).perform(click())
+        onView(withId(R.id.button_3)).perform(click())
+        onView(withId(R.id.button_sum)).perform(click())
+        onView(withId(R.id.button_3)).perform(click())
+        onView(withId(R.id.button_2)).perform(click())
+        onView(withId(R.id.button_1)).perform(click())
+        onView(withId(R.id.button_calc)).perform(click())
+        onView(withId(R.id.field)).check(matches(withText("${123 + 321}")))
+    }
+
+    @Test
+    fun testSub() {
+        onView(withId(R.id.button_9)).perform(click())
+        onView(withId(R.id.button_9)).perform(click())
+        onView(withId(R.id.button_9)).perform(click())
+        onView(withId(R.id.button_sub)).perform(click())
+        onView(withId(R.id.button_3)).perform(click())
+        onView(withId(R.id.button_3)).perform(click())
+        onView(withId(R.id.button_3)).perform(click())
+        onView(withId(R.id.button_calc)).perform(click())
+        onView(withId(R.id.field)).check(matches(withText("${999 - 333}")))
+    }
+
+    @Test
+    fun testMul() {
+        onView(withId(R.id.button_1)).perform(click())
+        onView(withId(R.id.button_0)).perform(click())
+        onView(withId(R.id.button_0)).perform(click())
+        onView(withId(R.id.button_mul)).perform(click())
+        onView(withId(R.id.button_2)).perform(click())
+        onView(withId(R.id.button_0)).perform(click())
+        onView(withId(R.id.button_0)).perform(click())
+        onView(withId(R.id.button_calc)).perform(click())
+        val formatter = DecimalFormat("#,###")
+        onView(withId(R.id.field)).check(matches(withText(formatter.format(100 * 200))))
+    }
+
+    @Test
+    fun testDiv() {
+        onView(withId(R.id.button_3)).perform(click())
+        onView(withId(R.id.button_3)).perform(click())
+        onView(withId(R.id.button_3)).perform(click())
+        onView(withId(R.id.button_div)).perform(click())
+        onView(withId(R.id.button_1)).perform(click())
+        onView(withId(R.id.button_0)).perform(click())
+        onView(withId(R.id.button_0)).perform(click())
+        onView(withId(R.id.button_calc)).perform(click())
+        onView(withId(R.id.field)).check(matches(withText("${333 / 100.0}")))
+    }
+}
diff --git a/app/src/testShared/kotlin/net.pot8s.kotlintestsample/CalculatorSpec.kt b/app/src/testShared/kotlin/net.pot8s.kotlintestsample/CalculatorSpec.kt
deleted file mode 100644
index d983344..0000000
--- a/app/src/testShared/kotlin/net.pot8s.kotlintestsample/CalculatorSpec.kt
+++ /dev/null
@@ -1,77 +0,0 @@
-package net.pot8s.kotlintestsample
-
-import androidx.fragment.app.testing.launchFragmentInContainer
-import androidx.test.espresso.Espresso.onView
-import androidx.test.espresso.action.ViewActions.click
-import androidx.test.espresso.assertion.ViewAssertions.matches
-import androidx.test.espresso.matcher.ViewMatchers.withId
-import androidx.test.espresso.matcher.ViewMatchers.withText
-import net.pot8os.kotlintestsample.CalculatorFragment
-import net.pot8os.kotlintestsample.R
-import org.junit.Before
-import org.junit.Test
-import java.text.DecimalFormat
-
-/**
- * @author So Nakamura, 2020-Feb-15
- */
-abstract class CalculatorSpec {
-
-  @Before
-  fun setup() {
-    launchFragmentInContainer<CalculatorFragment>(themeResId = R.style.Theme_MyApp)
-  }
-
-  @Test
-  fun testSum() {
-    onView(withId(R.id.button_1)).perform(click())
-    onView(withId(R.id.button_2)).perform(click())
-    onView(withId(R.id.button_3)).perform(click())
-    onView(withId(R.id.button_sum)).perform(click())
-    onView(withId(R.id.button_3)).perform(click())
-    onView(withId(R.id.button_2)).perform(click())
-    onView(withId(R.id.button_1)).perform(click())
-    onView(withId(R.id.button_calc)).perform(click())
-    onView(withId(R.id.field)).check(matches(withText("${123 + 321}")))
-  }
-
-  @Test
-  fun testSub() {
-    onView(withId(R.id.button_9)).perform(click())
-    onView(withId(R.id.button_9)).perform(click())
-    onView(withId(R.id.button_9)).perform(click())
-    onView(withId(R.id.button_sub)).perform(click())
-    onView(withId(R.id.button_3)).perform(click())
-    onView(withId(R.id.button_3)).perform(click())
-    onView(withId(R.id.button_3)).perform(click())
-    onView(withId(R.id.button_calc)).perform(click())
-    onView(withId(R.id.field)).check(matches(withText("${999 - 333}")))
-  }
-
-  @Test
-  fun testMul() {
-    onView(withId(R.id.button_1)).perform(click())
-    onView(withId(R.id.button_0)).perform(click())
-    onView(withId(R.id.button_0)).perform(click())
-    onView(withId(R.id.button_mul)).perform(click())
-    onView(withId(R.id.button_2)).perform(click())
-    onView(withId(R.id.button_0)).perform(click())
-    onView(withId(R.id.button_0)).perform(click())
-    onView(withId(R.id.button_calc)).perform(click())
-    val formatter = DecimalFormat("#,###")
-    onView(withId(R.id.field)).check(matches(withText(formatter.format(100 * 200))))
-  }
-
-  @Test
-  fun testDiv() {
-    onView(withId(R.id.button_3)).perform(click())
-    onView(withId(R.id.button_3)).perform(click())
-    onView(withId(R.id.button_3)).perform(click())
-    onView(withId(R.id.button_div)).perform(click())
-    onView(withId(R.id.button_1)).perform(click())
-    onView(withId(R.id.button_0)).perform(click())
-    onView(withId(R.id.button_0)).perform(click())
-    onView(withId(R.id.button_calc)).perform(click())
-    onView(withId(R.id.field)).check(matches(withText("${333 / 100.0}")))
-  }
-}
diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index 97b2764..5accc9b 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -5,11 +5,11 @@ plugins {
 allprojects {
   repositories {
     google()
-    jcenter()
+    mavenCentral()
   }
 }
 
 dependencies {
-  implementation("com.android.tools.build:gradle:4.0.0")
-  implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.72")
+  implementation("com.android.tools.build:gradle:8.2.2")
+  implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.22")
 }
diff --git a/buildSrc/src/main/java/Dependencies.kt b/buildSrc/src/main/java/Dependencies.kt
index 62074c2..2e037fa 100644
--- a/buildSrc/src/main/java/Dependencies.kt
+++ b/buildSrc/src/main/java/Dependencies.kt
@@ -1,38 +1,40 @@
 import org.gradle.kotlin.dsl.DependencyHandlerScope
 
 fun DependencyHandlerScope.kotlin() {
-  implementation("org.jetbrains.kotlin:kotlin-stdlib:1.3.72")
+  implementation("org.jetbrains.kotlin:kotlin-stdlib:1.9.22")
 }
 
 fun DependencyHandlerScope.fragment() {
-  val version = "1.2.5"
+  val version = "1.6.2"
   implementation("androidx.fragment:fragment-ktx:$version")
   debugImplementation("androidx.fragment:fragment-testing:$version")
+  androidTestImplementation("androidx.fragment:fragment-testing:1.6.0")
 }
 
 fun DependencyHandlerScope.compat() {
-  implementation("androidx.appcompat:appcompat:1.1.0")
+  implementation("androidx.appcompat:appcompat:1.6.1")
 }
 
 fun DependencyHandlerScope.layout() {
-  implementation("androidx.constraintlayout:constraintlayout:1.1.3")
-  implementation("com.google.android.material:material:1.1.0")
+  implementation("androidx.constraintlayout:constraintlayout:2.1.4")
+  implementation("com.google.android.material:material:1.11.0")
 }
 
 fun DependencyHandlerScope.viewmodel() {
-  implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0")
+  implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.7.0")
 }
 
 fun DependencyHandlerScope.test() {
   // These dependencies are consumed in both unit tests and instrumented tests.
-  debugImplementation("androidx.test.espresso:espresso-core:3.2.0")
-  debugImplementation("androidx.test:runner:1.2.0")
-  debugImplementation("androidx.test:rules:1.2.0")
-  debugImplementation("androidx.test.ext:junit-ktx:1.1.1")
+  debugImplementation("androidx.test.espresso:espresso-core:3.5.1")
+  debugImplementation("androidx.test:runner:1.5.2")
+  debugImplementation("androidx.test:rules:1.5.0")
+  debugImplementation("androidx.test.ext:junit-ktx:1.1.5")
   // Regarding robolectric, only test target is sufficient.
-  testImplementation("org.robolectric:robolectric:4.3.1")
+  testImplementation("org.robolectric:robolectric:4.11.1")
 }
 
 private const val implementation = "implementation"
 private const val debugImplementation = "debugImplementation"
 private const val testImplementation = "testImplementation"
+private const val androidTestImplementation = "androidTestImplementation"
diff --git a/gradle.properties b/gradle.properties
index 5e8aa8b..a3cd645 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -14,3 +14,6 @@
 org.gradle.parallel=true
 org.gradle.caching=true
 android.useAndroidX=true
+android.defaults.buildfeatures.buildconfig=true
+android.nonTransitiveRClass=false
+android.nonFinalResIds=false
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index f9fd66e..d1f4080 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/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-6.5-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-all.zip