diff --git a/app-common-io/src/main/java/eu/darken/sdmse/common/pkgs/AKnownPkg.kt b/app-common-io/src/main/java/eu/darken/sdmse/common/pkgs/AKnownPkg.kt
index 969eac20f..dcb7acbf4 100644
--- a/app-common-io/src/main/java/eu/darken/sdmse/common/pkgs/AKnownPkg.kt
+++ b/app-common-io/src/main/java/eu/darken/sdmse/common/pkgs/AKnownPkg.kt
@@ -39,11 +39,11 @@ sealed class AKnownPkg constructor(override val id: Pkg.Id) : Pkg {
             ContextCompat.getDrawable(context, R.drawable.ic_default_app_icon_24)!!
         }
 
-    object AndroidSystem : AKnownPkg("android") {
+    data object AndroidSystem : AKnownPkg("android") {
         override val labelRes: Int = R.string.apps_known_android_system_label
     }
 
-    object GooglePlay : AKnownPkg("com.android.vending"), AppStore {
+    data object GooglePlay : AKnownPkg("com.android.vending"), AppStore {
         override val labelRes: Int = R.string.apps_known_installer_gplay_label
         override val iconRes: Int = R.drawable.ic_baseline_gplay_24
         override val urlGenerator: ((Pkg.Id) -> String) = {
@@ -51,23 +51,23 @@ sealed class AKnownPkg constructor(override val id: Pkg.Id) : Pkg {
         }
     }
 
-    object VivoAppStore : AKnownPkg("com.vivo.appstore"), AppStore {
+    data object VivoAppStore : AKnownPkg("com.vivo.appstore"), AppStore {
         override val labelRes: Int = R.string.apps_known_installer_vivo_label
     }
 
-    object OppoMarket : AKnownPkg("com.oppo.market"), AppStore {
+    data object OppoMarket : AKnownPkg("com.oppo.market"), AppStore {
         override val labelRes: Int = R.string.apps_known_installer_oppo_label
     }
 
-    object HuaweiAppGallery : AKnownPkg("com.huawei.appmarket"), AppStore {
+    data object HuaweiAppGallery : AKnownPkg("com.huawei.appmarket"), AppStore {
         override val labelRes: Int = R.string.apps_known_installer_huawei_label
     }
 
-    object SamsungAppStore : AKnownPkg("com.sec.android.app.samsungapps"), AppStore {
+    data object SamsungAppStore : AKnownPkg("com.sec.android.app.samsungapps"), AppStore {
         override val labelRes: Int = R.string.apps_known_installer_samsung_label
     }
 
-    object XiaomiAppStore : AKnownPkg("com.xiaomi.mipicks"), AppStore {
+    data object XiaomiAppStore : AKnownPkg("com.xiaomi.mipicks"), AppStore {
         override val labelRes: Int = R.string.apps_known_installer_xiaomi_label
     }
 
diff --git a/app-common/src/main/java/eu/darken/sdmse/common/permissions/Permission.kt b/app-common/src/main/java/eu/darken/sdmse/common/permissions/Permission.kt
index 144558fd9..65d1e6bc1 100644
--- a/app-common/src/main/java/eu/darken/sdmse/common/permissions/Permission.kt
+++ b/app-common/src/main/java/eu/darken/sdmse/common/permissions/Permission.kt
@@ -93,7 +93,7 @@ sealed class Permission(
         }
     }
 
-    object WRITE_SECURE_SETTINGS
+    data object WRITE_SECURE_SETTINGS
         : Permission("android.permission.WRITE_SECURE_SETTINGS")
 
     fun Intent.resolveActivities(context: Context): Collection<ResolveInfo> =
diff --git a/app/src/main/java/eu/darken/sdmse/common/MimeTypes.kt b/app/src/main/java/eu/darken/sdmse/common/MimeTypes.kt
index 84a0ef4f8..68472229d 100644
--- a/app/src/main/java/eu/darken/sdmse/common/MimeTypes.kt
+++ b/app/src/main/java/eu/darken/sdmse/common/MimeTypes.kt
@@ -2,5 +2,5 @@ package eu.darken.sdmse.common
 
 sealed class MimeTypes(val value: String) {
 
-    object Json : MimeTypes("application/json")
+    data object Json : MimeTypes("application/json")
 }
\ No newline at end of file
diff --git a/app/src/main/java/eu/darken/sdmse/main/ui/dashboard/DashboardEvents.kt b/app/src/main/java/eu/darken/sdmse/main/ui/dashboard/DashboardEvents.kt
index 209a34d56..ce5546ea7 100644
--- a/app/src/main/java/eu/darken/sdmse/main/ui/dashboard/DashboardEvents.kt
+++ b/app/src/main/java/eu/darken/sdmse/main/ui/dashboard/DashboardEvents.kt
@@ -9,8 +9,8 @@ import eu.darken.sdmse.systemcleaner.core.tasks.SystemCleanerDeleteTask
 
 sealed interface DashboardEvents {
 
-    object TodoHint : DashboardEvents
-    object SetupDismissHint : DashboardEvents
+    data object TodoHint : DashboardEvents
+    data object SetupDismissHint : DashboardEvents
 
     data class CorpseFinderDeleteConfirmation(
         val task: CorpseFinderDeleteTask,
diff --git a/app/src/main/java/eu/darken/sdmse/main/ui/dashboard/DashboardFragment.kt b/app/src/main/java/eu/darken/sdmse/main/ui/dashboard/DashboardFragment.kt
index 93552d4df..2a142631f 100644
--- a/app/src/main/java/eu/darken/sdmse/main/ui/dashboard/DashboardFragment.kt
+++ b/app/src/main/java/eu/darken/sdmse/main/ui/dashboard/DashboardFragment.kt
@@ -211,7 +211,7 @@ class DashboardFragment : Fragment3(R.layout.dashboard_fragment) {
                     .setAnchorView(ui.mainAction)
                     .show()
 
-                DashboardEvents.TodoHint -> MaterialAlertDialogBuilder(requireContext()).apply {
+                is DashboardEvents.TodoHint -> MaterialAlertDialogBuilder(requireContext()).apply {
                     setMessage(eu.darken.sdmse.common.R.string.general_todo_msg)
                 }.show()
             }
diff --git a/app/src/test/java/eu/darken/sdmse/systemcleaner/core/filter/SystemCleanerFilterTest.kt b/app/src/test/java/eu/darken/sdmse/systemcleaner/core/filter/SystemCleanerFilterTest.kt
index b8053cd3d..6f88f2145 100644
--- a/app/src/test/java/eu/darken/sdmse/systemcleaner/core/filter/SystemCleanerFilterTest.kt
+++ b/app/src/test/java/eu/darken/sdmse/systemcleaner/core/filter/SystemCleanerFilterTest.kt
@@ -358,12 +358,12 @@ abstract class SystemCleanerFilterTest : BaseTest() {
     }
 
     sealed interface Flag {
-        object File : Flag
-        object Dir : Flag
+        data object File : Flag
+        data object Dir : Flag
 
         sealed interface Area : Flag {
-            object Primary : Area
-            object Secondary : Area
+            data object Primary : Area
+            data object Secondary : Area
         }
     }
 
diff --git a/buildSrc/src/main/java/ProjectConfig.kt b/buildSrc/src/main/java/ProjectConfig.kt
index bc83d8296..ffeefceaf 100644
--- a/buildSrc/src/main/java/ProjectConfig.kt
+++ b/buildSrc/src/main/java/ProjectConfig.kt
@@ -90,7 +90,8 @@ fun BaseExtension.setupKotlinOptions() {
             "-Xopt-in=kotlinx.coroutines.FlowPreview",
             "-Xopt-in=kotlin.time.ExperimentalTime",
             "-Xopt-in=kotlin.RequiresOptIn",
-            "-Xjvm-default=all"
+            "-Xjvm-default=all",
+            "-XXLanguage:+DataObjects"
         )
     }
 }
diff --git a/buildSrc/src/main/java/Versions.kt b/buildSrc/src/main/java/Versions.kt
index 17131f97c..467fceae3 100644
--- a/buildSrc/src/main/java/Versions.kt
+++ b/buildSrc/src/main/java/Versions.kt
@@ -4,7 +4,7 @@ object Versions {
     }
 
     object Kotlin {
-        const val core = "1.8.20"
+        const val core = "1.9.21"
         const val coroutines = "1.6.4"
     }