diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 520baa134..b2cf6151c 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -106,7 +106,7 @@ dependencies {
 
     testImplementation(projects.core.dataTest)
     testImplementation(projects.core.testing)
-    testImplementation(libs.accompanist.testharness)
+    testImplementation(libs.androidx.compose.ui.test)
     testImplementation(libs.hilt.android.testing)
     testImplementation(libs.work.testing)
 
@@ -117,7 +117,7 @@ dependencies {
     androidTestImplementation(projects.core.dataTest)
     androidTestImplementation(projects.core.datastoreTest)
     androidTestImplementation(libs.androidx.navigation.testing)
-    androidTestImplementation(libs.accompanist.testharness)
+    androidTestImplementation(libs.androidx.compose.ui.test)
     androidTestImplementation(libs.hilt.android.testing)
 
     baselineProfile(projects.benchmarks)
diff --git a/app/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/ui/NavigationUiTest.kt b/app/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/ui/NavigationUiTest.kt
index d92390918..219259f5d 100644
--- a/app/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/ui/NavigationUiTest.kt
+++ b/app/src/androidTest/kotlin/com/google/samples/apps/nowinandroid/ui/NavigationUiTest.kt
@@ -19,12 +19,13 @@ package com.google.samples.apps.nowinandroid.ui
 import androidx.compose.foundation.layout.BoxWithConstraints
 import androidx.compose.material3.windowsizeclass.ExperimentalMaterial3WindowSizeClassApi
 import androidx.compose.material3.windowsizeclass.WindowSizeClass
+import androidx.compose.ui.test.DeviceConfigurationOverride
+import androidx.compose.ui.test.ForcedSize
 import androidx.compose.ui.test.assertIsDisplayed
 import androidx.compose.ui.test.junit4.createAndroidComposeRule
 import androidx.compose.ui.test.onNodeWithTag
 import androidx.compose.ui.unit.DpSize
 import androidx.compose.ui.unit.dp
-import com.google.accompanist.testharness.TestHarness
 import com.google.samples.apps.nowinandroid.core.data.repository.CompositeUserNewsResourceRepository
 import com.google.samples.apps.nowinandroid.core.data.util.NetworkMonitor
 import com.google.samples.apps.nowinandroid.core.rules.GrantPostNotificationsPermissionRule
@@ -89,7 +90,9 @@ class NavigationUiTest {
     @Test
     fun compactWidth_compactHeight_showsNavigationBar() {
         composeTestRule.setContent {
-            TestHarness(size = DpSize(400.dp, 400.dp)) {
+            DeviceConfigurationOverride(
+                DeviceConfigurationOverride.ForcedSize(DpSize(400.dp, 400.dp)),
+            ) {
                 BoxWithConstraints {
                     NiaApp(
                         windowSizeClass = WindowSizeClass.calculateFromSize(
@@ -109,7 +112,9 @@ class NavigationUiTest {
     @Test
     fun mediumWidth_compactHeight_showsNavigationRail() {
         composeTestRule.setContent {
-            TestHarness(size = DpSize(610.dp, 400.dp)) {
+            DeviceConfigurationOverride(
+                DeviceConfigurationOverride.ForcedSize(DpSize(610.dp, 400.dp)),
+            ) {
                 BoxWithConstraints {
                     NiaApp(
                         windowSizeClass = WindowSizeClass.calculateFromSize(
@@ -129,7 +134,9 @@ class NavigationUiTest {
     @Test
     fun expandedWidth_compactHeight_showsNavigationRail() {
         composeTestRule.setContent {
-            TestHarness(size = DpSize(900.dp, 400.dp)) {
+            DeviceConfigurationOverride(
+                DeviceConfigurationOverride.ForcedSize(DpSize(900.dp, 400.dp)),
+            ) {
                 BoxWithConstraints {
                     NiaApp(
                         windowSizeClass = WindowSizeClass.calculateFromSize(
@@ -149,7 +156,9 @@ class NavigationUiTest {
     @Test
     fun compactWidth_mediumHeight_showsNavigationBar() {
         composeTestRule.setContent {
-            TestHarness(size = DpSize(400.dp, 500.dp)) {
+            DeviceConfigurationOverride(
+                DeviceConfigurationOverride.ForcedSize(DpSize(400.dp, 500.dp)),
+            ) {
                 BoxWithConstraints {
                     NiaApp(
                         windowSizeClass = WindowSizeClass.calculateFromSize(
@@ -169,7 +178,9 @@ class NavigationUiTest {
     @Test
     fun mediumWidth_mediumHeight_showsNavigationRail() {
         composeTestRule.setContent {
-            TestHarness(size = DpSize(610.dp, 500.dp)) {
+            DeviceConfigurationOverride(
+                DeviceConfigurationOverride.ForcedSize(DpSize(610.dp, 500.dp)),
+            ) {
                 BoxWithConstraints {
                     NiaApp(
                         windowSizeClass = WindowSizeClass.calculateFromSize(
@@ -189,7 +200,9 @@ class NavigationUiTest {
     @Test
     fun expandedWidth_mediumHeight_showsNavigationRail() {
         composeTestRule.setContent {
-            TestHarness(size = DpSize(900.dp, 500.dp)) {
+            DeviceConfigurationOverride(
+                DeviceConfigurationOverride.ForcedSize(DpSize(900.dp, 500.dp)),
+            ) {
                 BoxWithConstraints {
                     NiaApp(
                         windowSizeClass = WindowSizeClass.calculateFromSize(
@@ -209,7 +222,9 @@ class NavigationUiTest {
     @Test
     fun compactWidth_expandedHeight_showsNavigationBar() {
         composeTestRule.setContent {
-            TestHarness(size = DpSize(400.dp, 1000.dp)) {
+            DeviceConfigurationOverride(
+                DeviceConfigurationOverride.ForcedSize(DpSize(400.dp, 1000.dp)),
+            ) {
                 BoxWithConstraints {
                     NiaApp(
                         windowSizeClass = WindowSizeClass.calculateFromSize(
@@ -229,7 +244,9 @@ class NavigationUiTest {
     @Test
     fun mediumWidth_expandedHeight_showsNavigationRail() {
         composeTestRule.setContent {
-            TestHarness(size = DpSize(610.dp, 1000.dp)) {
+            DeviceConfigurationOverride(
+                DeviceConfigurationOverride.ForcedSize(DpSize(610.dp, 1000.dp)),
+            ) {
                 BoxWithConstraints {
                     NiaApp(
                         windowSizeClass = WindowSizeClass.calculateFromSize(
@@ -249,7 +266,9 @@ class NavigationUiTest {
     @Test
     fun expandedWidth_expandedHeight_showsNavigationRail() {
         composeTestRule.setContent {
-            TestHarness(size = DpSize(900.dp, 1000.dp)) {
+            DeviceConfigurationOverride(
+                DeviceConfigurationOverride.ForcedSize(DpSize(900.dp, 1000.dp)),
+            ) {
                 BoxWithConstraints {
                     NiaApp(
                         windowSizeClass = WindowSizeClass.calculateFromSize(
diff --git a/app/src/testDemo/kotlin/com/google/samples/apps/nowinandroid/ui/NiaAppScreenSizesScreenshotTests.kt b/app/src/testDemo/kotlin/com/google/samples/apps/nowinandroid/ui/NiaAppScreenSizesScreenshotTests.kt
index f7345f04f..2a2f7bb63 100644
--- a/app/src/testDemo/kotlin/com/google/samples/apps/nowinandroid/ui/NiaAppScreenSizesScreenshotTests.kt
+++ b/app/src/testDemo/kotlin/com/google/samples/apps/nowinandroid/ui/NiaAppScreenSizesScreenshotTests.kt
@@ -22,6 +22,8 @@ import androidx.compose.material3.windowsizeclass.ExperimentalMaterial3WindowSiz
 import androidx.compose.material3.windowsizeclass.WindowSizeClass
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.test.DeviceConfigurationOverride
+import androidx.compose.ui.test.ForcedSize
 import androidx.compose.ui.test.junit4.createAndroidComposeRule
 import androidx.compose.ui.test.onRoot
 import androidx.compose.ui.unit.Dp
@@ -32,7 +34,6 @@ import androidx.work.Configuration
 import androidx.work.testing.SynchronousExecutor
 import androidx.work.testing.WorkManagerTestInitHelper
 import com.github.takahirom.roborazzi.captureRoboImage
-import com.google.accompanist.testharness.TestHarness
 import com.google.samples.apps.nowinandroid.core.data.repository.TopicsRepository
 import com.google.samples.apps.nowinandroid.core.data.repository.UserDataRepository
 import com.google.samples.apps.nowinandroid.core.data.repository.UserNewsResourceRepository
@@ -139,7 +140,9 @@ class NiaAppScreenSizesScreenshotTests {
             CompositionLocalProvider(
                 LocalInspectionMode provides true,
             ) {
-                TestHarness(size = DpSize(width, height)) {
+                DeviceConfigurationOverride(
+                    DeviceConfigurationOverride.ForcedSize(DpSize(width, height)),
+                ) {
                     BoxWithConstraints {
                         NiaTheme {
                             NiaApp(
diff --git a/core/designsystem/build.gradle.kts b/core/designsystem/build.gradle.kts
index d68117d06..bc6ba50b1 100644
--- a/core/designsystem/build.gradle.kts
+++ b/core/designsystem/build.gradle.kts
@@ -43,7 +43,6 @@ dependencies {
     implementation(libs.coil.kt.compose)
 
     testImplementation(libs.androidx.compose.ui.test)
-    testImplementation(libs.accompanist.testharness)
     testImplementation(libs.hilt.android.testing)
     testImplementation(libs.robolectric)
     testImplementation(libs.roborazzi)
diff --git a/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/FilterChipScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/FilterChipScreenshotTests.kt
index 2c9bc91ec..cd2ab2082 100644
--- a/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/FilterChipScreenshotTests.kt
+++ b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/FilterChipScreenshotTests.kt
@@ -21,12 +21,15 @@ import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.test.DeviceConfigurationOverride
+import androidx.compose.ui.test.FontScale
+import androidx.compose.ui.test.ForcedSize
 import androidx.compose.ui.test.junit4.createAndroidComposeRule
 import androidx.compose.ui.test.onRoot
+import androidx.compose.ui.test.then
 import androidx.compose.ui.unit.DpSize
 import androidx.compose.ui.unit.dp
 import com.github.takahirom.roborazzi.captureRoboImage
-import com.google.accompanist.testharness.TestHarness
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaBackground
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaFilterChip
 import com.google.samples.apps.nowinandroid.core.designsystem.theme.NiaTheme
@@ -78,7 +81,10 @@ class FilterChipScreenshotTests() {
             CompositionLocalProvider(
                 LocalInspectionMode provides true,
             ) {
-                TestHarness(fontScale = 2f, size = DpSize(80.dp, 40.dp)) {
+                DeviceConfigurationOverride(
+                    DeviceConfigurationOverride.FontScale(2f) then
+                        DeviceConfigurationOverride.ForcedSize(DpSize(80.dp, 40.dp)),
+                ) {
                     NiaTheme {
                         NiaBackground {
                             NiaFilterChip(selected = true, onSelectedChange = {}) {
diff --git a/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/NavigationScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/NavigationScreenshotTests.kt
index e2e92b570..9545732ba 100644
--- a/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/NavigationScreenshotTests.kt
+++ b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/NavigationScreenshotTests.kt
@@ -23,10 +23,11 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.test.DeviceConfigurationOverride
+import androidx.compose.ui.test.FontScale
 import androidx.compose.ui.test.junit4.createAndroidComposeRule
 import androidx.compose.ui.test.onRoot
 import com.github.takahirom.roborazzi.captureRoboImage
-import com.google.accompanist.testharness.TestHarness
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaNavigationBar
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaNavigationBarItem
 import com.google.samples.apps.nowinandroid.core.designsystem.icon.NiaIcons
@@ -66,7 +67,9 @@ class NavigationScreenshotTests() {
             CompositionLocalProvider(
                 LocalInspectionMode provides true,
             ) {
-                TestHarness(fontScale = 2f) {
+                DeviceConfigurationOverride(
+                    DeviceConfigurationOverride.FontScale(2f),
+                ) {
                     NiaTheme {
                         NiaNavigationBarExample("Looong item")
                     }
diff --git a/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TabsScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TabsScreenshotTests.kt
index 9190d5f35..a5df8b530 100644
--- a/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TabsScreenshotTests.kt
+++ b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TabsScreenshotTests.kt
@@ -22,10 +22,11 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.test.DeviceConfigurationOverride
+import androidx.compose.ui.test.FontScale
 import androidx.compose.ui.test.junit4.createAndroidComposeRule
 import androidx.compose.ui.test.onRoot
 import com.github.takahirom.roborazzi.captureRoboImage
-import com.google.accompanist.testharness.TestHarness
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaTab
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaTabRow
 import com.google.samples.apps.nowinandroid.core.designsystem.theme.NiaTheme
@@ -62,7 +63,9 @@ class TabsScreenshotTests() {
             CompositionLocalProvider(
                 LocalInspectionMode provides true,
             ) {
-                TestHarness(fontScale = 2f) {
+                DeviceConfigurationOverride(
+                    DeviceConfigurationOverride.FontScale(2f),
+                ) {
                     NiaTheme {
                         NiaTabsExample("Looooong item")
                     }
diff --git a/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TagScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TagScreenshotTests.kt
index d9edfd6c6..eef7eb883 100644
--- a/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TagScreenshotTests.kt
+++ b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TagScreenshotTests.kt
@@ -20,10 +20,11 @@ import androidx.activity.ComponentActivity
 import androidx.compose.material3.Text
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.test.DeviceConfigurationOverride
+import androidx.compose.ui.test.FontScale
 import androidx.compose.ui.test.junit4.createAndroidComposeRule
 import androidx.compose.ui.test.onRoot
 import com.github.takahirom.roborazzi.captureRoboImage
-import com.google.accompanist.testharness.TestHarness
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaTopicTag
 import com.google.samples.apps.nowinandroid.core.designsystem.theme.NiaTheme
 import com.google.samples.apps.nowinandroid.core.testing.util.DefaultRoborazziOptions
@@ -61,7 +62,9 @@ class TagScreenshotTests() {
             CompositionLocalProvider(
                 LocalInspectionMode provides true,
             ) {
-                TestHarness(fontScale = 2f) {
+                DeviceConfigurationOverride(
+                    DeviceConfigurationOverride.Companion.FontScale(2f),
+                ) {
                     NiaTheme {
                         NiaTopicTag(followed = true, onClick = {}) {
                             Text("LOOOOONG TOPIC")
diff --git a/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TopAppBarScreenshotTests.kt b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TopAppBarScreenshotTests.kt
index 6fac01562..8e4200e77 100644
--- a/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TopAppBarScreenshotTests.kt
+++ b/core/designsystem/src/test/kotlin/com/google/samples/apps/nowinandroid/core/designsystem/TopAppBarScreenshotTests.kt
@@ -16,16 +16,16 @@
 
 package com.google.samples.apps.nowinandroid.core.designsystem
 
-import android.R.string
 import androidx.activity.ComponentActivity
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.test.DeviceConfigurationOverride
+import androidx.compose.ui.test.FontScale
 import androidx.compose.ui.test.junit4.createAndroidComposeRule
 import androidx.compose.ui.test.onRoot
 import com.github.takahirom.roborazzi.captureRoboImage
-import com.google.accompanist.testharness.TestHarness
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaTopAppBar
 import com.google.samples.apps.nowinandroid.core.designsystem.icon.NiaIcons
 import com.google.samples.apps.nowinandroid.core.designsystem.theme.NiaTheme
@@ -63,7 +63,9 @@ class TopAppBarScreenshotTests() {
             CompositionLocalProvider(
                 LocalInspectionMode provides true,
             ) {
-                TestHarness(fontScale = 2f) {
+                DeviceConfigurationOverride(
+                    DeviceConfigurationOverride.FontScale(2f),
+                ) {
                     NiaTheme {
                         NiaTopAppBarExample()
                     }
diff --git a/core/testing/build.gradle.kts b/core/testing/build.gradle.kts
index 275555d80..2da73ad7a 100644
--- a/core/testing/build.gradle.kts
+++ b/core/testing/build.gradle.kts
@@ -34,7 +34,7 @@ dependencies {
 
     debugApi(libs.androidx.compose.ui.testManifest)
 
-    implementation(libs.accompanist.testharness)
+    implementation(libs.androidx.compose.ui.test)
     implementation(libs.androidx.activity.compose)
     implementation(libs.androidx.test.rules)
     implementation(libs.hilt.android.testing)
diff --git a/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/util/ScreenshotHelper.kt b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/util/ScreenshotHelper.kt
index 468fff8df..f11651220 100644
--- a/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/util/ScreenshotHelper.kt
+++ b/core/testing/src/main/kotlin/com/google/samples/apps/nowinandroid/core/testing/util/ScreenshotHelper.kt
@@ -25,6 +25,8 @@ import androidx.compose.runtime.key
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.test.DarkMode
+import androidx.compose.ui.test.DeviceConfigurationOverride
 import androidx.compose.ui.test.junit4.AndroidComposeTestRule
 import androidx.compose.ui.test.onRoot
 import androidx.test.ext.junit.rules.ActivityScenarioRule
@@ -32,7 +34,6 @@ import com.github.takahirom.roborazzi.RoborazziOptions
 import com.github.takahirom.roborazzi.RoborazziOptions.CompareOptions
 import com.github.takahirom.roborazzi.RoborazziOptions.RecordOptions
 import com.github.takahirom.roborazzi.captureRoboImage
-import com.google.accompanist.testharness.TestHarness
 import com.google.samples.apps.nowinandroid.core.designsystem.theme.NiaTheme
 import org.robolectric.RuntimeEnvironment
 
@@ -75,7 +76,9 @@ fun <A : ComponentActivity> AndroidComposeTestRule<ActivityScenarioRule<A>, A>.c
         CompositionLocalProvider(
             LocalInspectionMode provides true,
         ) {
-            TestHarness(darkMode = darkMode) {
+            DeviceConfigurationOverride(
+                override = DeviceConfigurationOverride.Companion.DarkMode(darkMode),
+            ) {
                 body()
             }
         }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index c26e134ca..7781d142b 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -8,6 +8,7 @@ androidxActivity = "1.8.0"
 androidxAppCompat = "1.6.1"
 androidxBrowser = "1.6.0"
 androidxComposeBom = "2024.02.00"
+androidxComposeUiTest = "1.7.0-alpha02"
 androidxComposeCompiler = "1.5.7"
 androidxComposeRuntimeTracing = "1.0.0-beta01"
 androidxCore = "1.12.0"
@@ -59,7 +60,6 @@ turbine = "1.0.0"
 
 [libraries]
 accompanist-permissions = { group = "com.google.accompanist", name = "accompanist-permissions", version.ref = "accompanist" }
-accompanist-testharness = { group = "com.google.accompanist", name = "accompanist-testharness", version.ref = "accompanist" }
 android-desugarJdkLibs = { group = "com.android.tools", name = "desugar_jdk_libs", version.ref = "androidDesugarJdkLibs" }
 androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "androidxActivity" }
 androidx-appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "androidxAppCompat" }
@@ -72,7 +72,7 @@ androidx-compose-material-iconsExtended = { group = "androidx.compose.material",
 androidx-compose-material3 = { group = "androidx.compose.material3", name = "material3" }
 androidx-compose-material3-windowSizeClass = { group = "androidx.compose.material3", name = "material3-window-size-class" }
 androidx-compose-runtime = { group = "androidx.compose.runtime", name = "runtime" }
-androidx-compose-ui-test = { group = "androidx.compose.ui", name = "ui-test-junit4" }
+androidx-compose-ui-test = { group = "androidx.compose.ui", name = "ui-test-junit4", version.ref = "androidxComposeUiTest" }
 androidx-compose-ui-testManifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
 androidx-compose-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
 androidx-compose-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }