diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 617fdbd97676..df017aa6a7b9 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -62,7 +62,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     # Add any setup steps before running the `github/codeql-action/init` action.
     # This includes steps like installing compilers or runtimes (`actions/setup-node`
diff --git a/.github/workflows/tests_unit.yml b/.github/workflows/tests_unit.yml
index cfa55a137266..c1c0c70e8a26 100644
--- a/.github/workflows/tests_unit.yml
+++ b/.github/workflows/tests_unit.yml
@@ -118,7 +118,7 @@ jobs:
     #  CODACY_TOKEN: ${{ secrets.CODACY_TOKEN }}
     steps:
       - name: Configure Windows Pagefile
-        uses: al-cheb/configure-pagefile-action@v1.4
+        uses: al-cheb/configure-pagefile-action@v1.5
         if: contains(matrix.os, 'windows')
         with:
           minimum-size: 8GB
diff --git a/AnkiDroid/build.gradle b/AnkiDroid/build.gradle
index bd5bb5ce8e37..06c81b7ef77c 100644
--- a/AnkiDroid/build.gradle
+++ b/AnkiDroid/build.gradle
@@ -2,7 +2,6 @@ plugins {
     // Gradle plugin portal
     alias(libs.plugins.tripletPlay)
     alias(libs.plugins.android.application)
-    alias(libs.plugins.kotlin.android)
     alias(libs.plugins.kotlin.parcelize)
     alias(libs.plugins.kotlin.serialization)
     alias(libs.plugins.keeper)
@@ -47,6 +46,7 @@ android {
         buildConfig = true
         aidl = true
         viewBinding = true
+        resValues = true
     }
 
     if (rootProject.testReleaseBuild) {
@@ -248,9 +248,9 @@ android {
         targetCompatibility JavaVersion.VERSION_17
         coreLibraryDesugaringEnabled = true
     }
-    kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_17
-    }
+//    kotlinOptions {
+//        jvmTarget = JavaVersion.VERSION_17
+//    }
 
     packagingOptions {
         resources {
@@ -309,7 +309,7 @@ tasks.register('copyTestLibIntoAndroidTest', Copy) {
     }
 }
 tasks.named('preBuild').configure { dependsOn('copyTestLibIntoAndroidTest') }
-tasks.named('runKtlintCheckOverAndroidTestSourceSet').configure { mustRunAfter('copyTestLibIntoAndroidTest') }
+//tasks.named('runKtlintCheckOverAndroidTestSourceSet').configure { mustRunAfter('copyTestLibIntoAndroidTest') }
 
 // Issue 11078 - some emulators run, but run zero tests, and still report success
 tasks.register('assertNonzeroAndroidTests') {
diff --git a/AnkiDroid/src/main/java/com/ichi2/anki/multimedia/MultimediaFragment.kt b/AnkiDroid/src/main/java/com/ichi2/anki/multimedia/MultimediaFragment.kt
index ea8efd374b04..faa4c9b523df 100644
--- a/AnkiDroid/src/main/java/com/ichi2/anki/multimedia/MultimediaFragment.kt
+++ b/AnkiDroid/src/main/java/com/ichi2/anki/multimedia/MultimediaFragment.kt
@@ -86,9 +86,9 @@ abstract class MultimediaFragment(
         if (arguments != null) {
             Timber.d("Getting MultimediaActivityExtra values from arguments")
             val multimediaActivityExtra =
-                arguments?.getSerializableCompat(
+                arguments?.getSerializableCompat<MultimediaActivityExtra>(
                     MultimediaActivity.MULTIMEDIA_ARGS_EXTRA,
-                ) as? MultimediaActivityExtra
+                )
 
             if (multimediaActivityExtra != null) {
                 indexValue = multimediaActivityExtra.index
diff --git a/AnkiDroid/src/main/java/com/ichi2/anki/preferences/AppearanceSettingsFragment.kt b/AnkiDroid/src/main/java/com/ichi2/anki/preferences/AppearanceSettingsFragment.kt
index a6a605102752..2507459ac228 100644
--- a/AnkiDroid/src/main/java/com/ichi2/anki/preferences/AppearanceSettingsFragment.kt
+++ b/AnkiDroid/src/main/java/com/ichi2/anki/preferences/AppearanceSettingsFragment.kt
@@ -101,7 +101,7 @@ class AppearanceSettingsFragment : SettingsFragment() {
             // Only restart if theme has changed
             if (newValue != appThemePref.value) {
                 val previousThemeId = Themes.currentTheme.id
-                appThemePref.value = newValue.toString()
+                appThemePref.value = newValue
                 updateCurrentTheme(requireContext())
 
                 if (previousThemeId != Themes.currentTheme.id) {
diff --git a/AnkiDroid/src/main/java/com/ichi2/anki/web/HttpFetcher.kt b/AnkiDroid/src/main/java/com/ichi2/anki/web/HttpFetcher.kt
index 3b8d5fbc3199..1d10e818e93b 100644
--- a/AnkiDroid/src/main/java/com/ichi2/anki/web/HttpFetcher.kt
+++ b/AnkiDroid/src/main/java/com/ichi2/anki/web/HttpFetcher.kt
@@ -98,7 +98,7 @@ object HttpFetcher {
                 val reader =
                     BufferedReader(
                         InputStreamReader(
-                            response.body!!.byteStream(),
+                            response.body.byteStream(),
                             Charset.forName(encoding),
                         ),
                     )
diff --git a/AnkiDroid/src/main/java/com/ichi2/utils/AlertDialogFacade.kt b/AnkiDroid/src/main/java/com/ichi2/utils/AlertDialogFacade.kt
index 29aafc720eba..5db6a7e2c005 100644
--- a/AnkiDroid/src/main/java/com/ichi2/utils/AlertDialogFacade.kt
+++ b/AnkiDroid/src/main/java/com/ichi2/utils/AlertDialogFacade.kt
@@ -91,7 +91,7 @@ fun AlertDialog.Builder.message(
 fun AlertDialog.Builder.iconAttr(
     @DrawableRes res: Int,
 ) = apply {
-    return this.setIcon(Themes.getResFromAttr(this.context, res))
+    this.setIcon(Themes.getResFromAttr(this.context, res))
 }
 
 fun AlertDialog.Builder.positiveButton(
diff --git a/api/build.gradle.kts b/api/build.gradle.kts
index fb2397b38674..198c8f46f5ef 100644
--- a/api/build.gradle.kts
+++ b/api/build.gradle.kts
@@ -3,7 +3,6 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
 plugins {
     alias(libs.plugins.android.library)
-    alias(libs.plugins.kotlin.android)
     id("maven-publish")
 }
 
@@ -48,7 +47,7 @@ android {
         }
         release {
             isMinifyEnabled = false
-            proguardFiles(getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro")
+            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
         }
     }
     compileOptions {
diff --git a/build.gradle.kts b/build.gradle.kts
index 66dc09c3a04d..d08b17a98660 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -42,7 +42,7 @@ subprojects {
 
     afterEvaluate {
         plugins.withType<com.android.build.gradle.BasePlugin> {
-            val androidExtension = extensions.getByName("android") as CommonExtension<*, *, *, *, *, *>
+            val androidExtension = extensions.getByName("android") as CommonExtension
             androidExtension.testOptions.unitTests {
                 isIncludeAndroidResources = true
             }
@@ -93,7 +93,7 @@ subprojects {
          */
         tasks.withType(KotlinCompile::class.java).configureEach {
             compilerOptions {
-                allWarningsAsErrors = fatalWarnings
+                allWarningsAsErrors = false //fatalWarnings
                 val compilerArgs = mutableListOf(
                     // https://youtrack.jetbrains.com/issue/KT-73255
                     // Apply @StringRes to both constructor params and generated properties
diff --git a/common/build.gradle.kts b/common/build.gradle.kts
index 634737b91176..8cdcace26f38 100644
--- a/common/build.gradle.kts
+++ b/common/build.gradle.kts
@@ -2,7 +2,6 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
 plugins {
     alias(libs.plugins.android.library)
-    alias(libs.plugins.kotlin.android)
 }
 
 android {
diff --git a/gradle.properties b/gradle.properties
index 509de8a9e4ff..170a0fda81a1 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -26,4 +26,6 @@ org.gradle.caching=true
 org.gradle.configuration-cache.parallel=true
 
 # Enable file system watching (should reduce disk IO and increase incremental build speed).
-org.gradle.vfs.watch=true
\ No newline at end of file
+org.gradle.vfs.watch=true
+
+android.newDsl=false
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index f737e97e3ef8..39c925d41eb6 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -18,7 +18,7 @@ ktlint = '1.5.0'
 #
 # Old changelogs - See 'Table of Contents' in sidebar
 # https://developer.android.com/build/releases/past-releases
-androidGradlePlugin = "8.13.0"
+androidGradlePlugin = "9.0.0-alpha13"
 # https://developer.android.com/jetpack/androidx/releases/activity
 androidxActivity = "1.11.0"
 # https://developer.android.com/jetpack/androidx/releases/annotation
@@ -83,9 +83,9 @@ json = "20250517"
 jsoup = "1.21.2"
 androidTestJunit = "1.3.0"
 # https://github.com/junit-team/junit5/releases/
-junit = "6.0.0"
+junit = "6.0.1"
 # https://github.com/JetBrains/kotlin/releases/
-kotlin = '2.2.10'
+kotlin = '2.3.0-Beta2'
 # https://github.com/Kotlin/kotlinx.serialization/releases
 kotlinxSerializationJson = "1.9.0"
 ktlintGradlePlugin = "13.1.0"
@@ -110,7 +110,7 @@ slf4jTimber = "3.1"
 timber = "5.0.1"
 # https://github.com/Triple-T/gradle-play-publisher/releases
 # In the past, releases have been published before the changelog
-triplet = "3.12.1"
+triplet = "3.12.2"
 turbine = "1.2.1"
 
 [libraries]
@@ -155,7 +155,7 @@ java-semver = { module = "com.github.zafarkhaja:java-semver", version.ref = "jav
 jsoup = { module = "org.jsoup:jsoup", version.ref = "jsoup" }
 kotlin-stdlib = { module = "org.jetbrains.kotlin:kotlin-stdlib", version.ref = "kotlin" }
 kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlinxSerializationJson" }
-kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core" }
+kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "coroutines" }
 leakcanary-android = { module = "com.squareup.leakcanary:leakcanary-android", version.ref = "leakcanaryAndroid" }
 google-material = { module = "com.google.android.material:material", version.ref = "material" }
 nanohttpd = { module = "org.nanohttpd:nanohttpd", version.ref = "nanohttpd" }
diff --git a/libanki/build.gradle.kts b/libanki/build.gradle.kts
index 8f07bf44bce1..4973f2dd5ff9 100644
--- a/libanki/build.gradle.kts
+++ b/libanki/build.gradle.kts
@@ -3,7 +3,6 @@ import java.util.Properties
 
 plugins {
     alias(libs.plugins.android.library)
-    alias(libs.plugins.kotlin.android)
     alias(libs.plugins.kotlin.serialization)
 }
 
@@ -19,8 +18,6 @@ android {
             libs.versions.minSdk
                 .get()
                 .toInt()
-
-        consumerProguardFiles("consumer-rules.pro")
     }
 
     compileOptions {
diff --git a/libanki/src/main/java/com/ichi2/anki/libanki/DB.kt b/libanki/src/main/java/com/ichi2/anki/libanki/DB.kt
index 0822024335e7..49e28ac189f8 100644
--- a/libanki/src/main/java/com/ichi2/anki/libanki/DB.kt
+++ b/libanki/src/main/java/com/ichi2/anki/libanki/DB.kt
@@ -134,11 +134,12 @@ class DB(
         database.execSQL(sql, `object`)
     }
 
-    @KotlinCleanup("""Use Kotlin string. Change split so that there is no empty string after last ";".""")
     fun executeScript(sql: String) {
-        val queries = java.lang.String(sql).split(";")
+        val queries = sql.split(";")
         for (query in queries) {
-            database.execSQL(query)
+            if (query.isNotEmpty()) {
+                database.execSQL(query)
+            }
         }
     }
 
diff --git a/libanki/testutils/build.gradle.kts b/libanki/testutils/build.gradle.kts
index e3518701a098..d63d23b2877d 100644
--- a/libanki/testutils/build.gradle.kts
+++ b/libanki/testutils/build.gradle.kts
@@ -19,7 +19,6 @@ import java.util.Properties
 
 plugins {
     alias(libs.plugins.android.library)
-    alias(libs.plugins.kotlin.android)
 }
 
 android {
diff --git a/testlib/build.gradle.kts b/testlib/build.gradle.kts
index d2f2cdfac4dd..506dac74d13a 100644
--- a/testlib/build.gradle.kts
+++ b/testlib/build.gradle.kts
@@ -2,7 +2,6 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
 plugins {
     alias(libs.plugins.android.library)
-    alias(libs.plugins.kotlin.android)
 }
 
 android {
diff --git a/tools/localization/package.json b/tools/localization/package.json
index f10d84d0681d..af002f95bab2 100644
--- a/tools/localization/package.json
+++ b/tools/localization/package.json
@@ -27,7 +27,7 @@
         "@eslint/eslintrc": "^3.3.1",
         "@eslint/js": "^9.39.0",
         "@types/jest": "^30.0.0",
-        "@types/node": "^24.9.2",
+        "@types/node": "^24.10.0",
         "@typescript-eslint/eslint-plugin": "^8.46.2",
         "@typescript-eslint/parser": "^8.46.2",
         "eslint": "^9.39.0",
diff --git a/tools/localization/yarn.lock b/tools/localization/yarn.lock
index 4111488c287a..147a42c590d2 100644
--- a/tools/localization/yarn.lock
+++ b/tools/localization/yarn.lock
@@ -1149,7 +1149,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/node@npm:*, @types/node@npm:^24.9.2":
+"@types/node@npm:*":
   version: 24.9.2
   resolution: "@types/node@npm:24.9.2"
   dependencies:
@@ -1158,6 +1158,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/node@npm:^24.10.0":
+  version: 24.10.0
+  resolution: "@types/node@npm:24.10.0"
+  dependencies:
+    undici-types: "npm:~7.16.0"
+  checksum: 10c0/f82ed7194e16f5590ef7afdc20c6d09068c76d50278b485ede8f0c5749683536e3064ffa8def8db76915196afb3724b854aa5723c64d6571b890b14492943b46
+  languageName: node
+  linkType: hard
+
 "@types/stack-utils@npm:^2.0.3":
   version: 2.0.3
   resolution: "@types/stack-utils@npm:2.0.3"
@@ -1530,7 +1539,7 @@ __metadata:
     "@eslint/eslintrc": "npm:^3.3.1"
     "@eslint/js": "npm:^9.39.0"
     "@types/jest": "npm:^30.0.0"
-    "@types/node": "npm:^24.9.2"
+    "@types/node": "npm:^24.10.0"
     "@typescript-eslint/eslint-plugin": "npm:^8.46.2"
     "@typescript-eslint/parser": "npm:^8.46.2"
     axios: "npm:^1.13.1"
diff --git a/vbpd/build.gradle.kts b/vbpd/build.gradle.kts
index 1a0ab373fc47..6589470fb2a5 100644
--- a/vbpd/build.gradle.kts
+++ b/vbpd/build.gradle.kts
@@ -2,7 +2,6 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
 plugins {
     alias(libs.plugins.android.library)
-    alias(libs.plugins.kotlin.android)
 }
 
 android {