diff --git a/android/build.gradle.kts b/android/build.gradle.kts
index 0ca5328c23..a2deca8c07 100644
--- a/android/build.gradle.kts
+++ b/android/build.gradle.kts
@@ -24,7 +24,7 @@ android {
     }
     defaultConfig {
         applicationId = "com.unciv.app"
-        minSdk = 14
+        minSdk = 17
         targetSdk = 30 // See #5044
         versionCode = BuildConfig.appCodeNumber
         versionName = BuildConfig.appVersion
@@ -60,8 +60,8 @@ android {
         disable("MissingTranslation")
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_7
-        targetCompatibility = JavaVersion.VERSION_1_7
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
     }
     androidResources {
         // Don't add local save files and fonts to release, obviously
@@ -122,6 +122,6 @@ tasks.register<JavaExec>("run") {
 dependencies {
     // Updating to latest version would require upgrading sourceCompatability and targetCompatability to 1_8 -
     //   run `./gradlew build --scan` to see details
-    implementation("androidx.core:core-ktx:1.3.2")
-    implementation("androidx.work:work-runtime-ktx:2.6.0-alpha02")
+    implementation("androidx.core:core-ktx:1.6.0")
+    implementation("androidx.work:work-runtime-ktx:2.6.0")
 }
diff --git a/android/src/com/unciv/app/MultiplayerTurnCheckWorker.kt b/android/src/com/unciv/app/MultiplayerTurnCheckWorker.kt
index 89dd78b9a4..d724daec6c 100644
--- a/android/src/com/unciv/app/MultiplayerTurnCheckWorker.kt
+++ b/android/src/com/unciv/app/MultiplayerTurnCheckWorker.kt
@@ -42,7 +42,6 @@ class MultiplayerTurnCheckWorker(appContext: Context, workerParams: WorkerParame
 
         private const val FAIL_COUNT = "FAIL_COUNT"
         private const val GAME_ID = "GAME_ID"
-        private const val GAME_NAMES = "GAME_NAMES"
         private const val USER_ID = "USER_ID"
         private const val CONFIGURED_DELAY = "CONFIGURED_DELAY"
         private const val PERSISTENT_NOTIFICATION_ENABLED = "PERSISTENT_NOTIFICATION_ENABLED"
@@ -184,7 +183,7 @@ class MultiplayerTurnCheckWorker(appContext: Context, workerParams: WorkerParame
                 // May be useful to remind a player that he forgot to complete his turn.
                 notifyUserAboutTurn(applicationContext)
             } else {
-                val inputData = workDataOf(Pair(FAIL_COUNT, 0), Pair(GAME_ID, gameIds), Pair(GAME_NAMES, gameNames),
+                val inputData = workDataOf(Pair(FAIL_COUNT, 0), Pair(GAME_ID, gameIds),
                         Pair(USER_ID, settings.userId), Pair(CONFIGURED_DELAY, settings.multiplayerTurnCheckerDelayInMinutes),
                         Pair(PERSISTENT_NOTIFICATION_ENABLED, settings.multiplayerTurnCheckerPersistentNotificationEnabled))
 
@@ -227,7 +226,6 @@ class MultiplayerTurnCheckWorker(appContext: Context, workerParams: WorkerParame
 
         try {
             val gameIds = inputData.getStringArray(GAME_ID)!!
-            val gameNames = inputData.getStringArray(GAME_NAMES)!!
             var arrayIndex = 0
             // We only want to notify the user or update persisted notification once but still want
             // to download all games to update the files hence this bool
diff --git a/buildSrc/src/main/kotlin/BuildConfig.kt b/buildSrc/src/main/kotlin/BuildConfig.kt
index 211f976c42..649c2ea3e2 100644
--- a/buildSrc/src/main/kotlin/BuildConfig.kt
+++ b/buildSrc/src/main/kotlin/BuildConfig.kt
@@ -1,7 +1,7 @@
 package com.unciv.build
 
 object BuildConfig {
-    const val kotlinVersion = "1.4.30"
+    const val kotlinVersion = "1.5.30"
     const val appName = "Unciv"
     const val appCodeNumber = 621
     const val appVersion = "3.16.12"