diff --git a/app/build.gradle b/app/build.gradle
index 92d7ca7..0032737 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,12 +1,16 @@
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
+plugins {
+    id 'com.android.application'
+    id 'kotlin-android'
+    id 'kotlin-kapt'
+    id 'com.google.devtools.ksp'
+}
 
 android {
-    compileSdkVersion 33
     defaultConfig {
         applicationId 'org.secuso.privacyfriendly2048'
         minSdkVersion 21
-        targetSdkVersion 33
+        targetSdkVersion 34
+        compileSdk 34
         versionCode 5
         versionName "1.3"
     }
@@ -18,32 +22,52 @@ android {
     }
 
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_11
-        targetCompatibility JavaVersion.VERSION_11
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
+    }
+
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_17.toString()
+    }
+
+    kotlin {
+        jvmToolchain(17)
+    }
+
+    android.applicationVariants.configureEach { variant ->
+        variant.outputs.all {
+            def appName = "pfa-2048"
+            outputFileName = appName + "-${variant.name}-v${variant.versionName}.apk"
+        }
     }
 
     dataBinding {
         enabled = true
     }
+    namespace 'org.secuso.privacyfriendly2048'
+
+    lint {
+        lintConfig = file("lint.xml")
+    }
 }
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    testImplementation 'junit:junit:4.12'
-    implementation 'androidx.appcompat:appcompat:1.0.0'
-    implementation 'com.google.android.material:material:1.0.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    testImplementation 'junit:junit:4.13.2'
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.android.material:material:1.11.0'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
-    implementation 'com.github.bumptech.glide:glide:4.7.1'
-    annotationProcessor 'com.github.bumptech.glide:compiler:4.7.1'
+    implementation 'com.github.bumptech.glide:glide:4.11.0'
+    annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'
 
     // Backup
     implementation project(path: ':backup-api')
-    def work_version = "2.4.0"
+    def work_version = "2.9.0"
     implementation "androidx.work:work-runtime:$work_version"
     implementation "androidx.work:work-runtime-ktx:$work_version"
     androidTestImplementation "androidx.work:work-testing:$work_version"
-    implementation 'androidx.sqlite:sqlite-ktx:2.3.1'
+    implementation 'androidx.sqlite:sqlite-ktx:2.4.0'
 
     constraints {
         implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.8.0") {
diff --git a/app/lint.xml b/app/lint.xml
new file mode 100644
index 0000000..1b66a25
--- /dev/null
+++ b/app/lint.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<lint>
+    <!-- Disable the NotificationPermission check for glide -->
+    <issue id="NotificationPermission">
+        <ignore regexp="com.bumptech.glide.request.target.NotificationTarget" />
+    </issue>
+
+    <!-- Set the severity of missing translations to warning instead of error -->
+    <issue id="MissingTranslation" severity="warning" />
+</lint>
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 69d0ffb..bdb16a2 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    package="org.secuso.privacyfriendly2048">
+    xmlns:tools="http://schemas.android.com/tools">
 
     <supports-screens
         android:anyDensity="true"
diff --git a/app/src/main/java/org/secuso/privacyfriendly2048/PF2048.kt b/app/src/main/java/org/secuso/privacyfriendly2048/PF2048.kt
index 60bc4fa..82bf185 100644
--- a/app/src/main/java/org/secuso/privacyfriendly2048/PF2048.kt
+++ b/app/src/main/java/org/secuso/privacyfriendly2048/PF2048.kt
@@ -17,11 +17,7 @@
 package org.secuso.privacyfriendly2048
 
 import android.app.Application
-import android.app.NotificationChannel
-import android.app.NotificationManager
-import android.os.Build
 import android.util.Log
-import androidx.appcompat.app.AppCompatDelegate
 import androidx.work.Configuration
 import org.secuso.privacyfriendly2048.backup.BackupCreator
 import org.secuso.privacyfriendly2048.backup.BackupRestorer
@@ -34,7 +30,5 @@ class PF2048 : Application(), Configuration.Provider {
         super.onCreate()
     }
 
-    override fun getWorkManagerConfiguration(): Configuration {
-        return Configuration.Builder().setMinimumLoggingLevel(Log.INFO).build()
-    }
+    override val workManagerConfiguration = Configuration.Builder().setMinimumLoggingLevel(Log.INFO).build()
 }
diff --git a/app/src/main/java/org/secuso/privacyfriendly2048/activities/GameActivity.java b/app/src/main/java/org/secuso/privacyfriendly2048/activities/GameActivity.java
index 51d1875..e182150 100644
--- a/app/src/main/java/org/secuso/privacyfriendly2048/activities/GameActivity.java
+++ b/app/src/main/java/org/secuso/privacyfriendly2048/activities/GameActivity.java
@@ -835,7 +835,7 @@ public void updateHighestNumber()
 
     public void check2048()
     {
-        if(won2048 == false)
+        if(won2048 == false) {
         for(int i = 0; i < elements.length; i++)
         {
             for(int j = 0; j < elements[i].length; j++)
@@ -866,6 +866,7 @@ public void onClick(DialogInterface dialog, int which) {
                 }
             }
         }
+        }
     }
 
 
@@ -1138,18 +1139,19 @@ public void onSaveInstanceState(Bundle savedInstanceState) {
 
     public void saveStateToFile(GameState nS)
     {
-        if(saveState)
-        try {
-            if(filename == null)
-                filename = "state" + n + ".txt";
-            File file = new File(getFilesDir(), filename);
-            FileOutputStream fileOut = new FileOutputStream(file);
-            ObjectOutputStream out = new ObjectOutputStream(fileOut);
-            out.writeObject(nS);
-            out.close();
-            fileOut.close();
-        } catch (IOException e) {
-            e.printStackTrace();
+        if(saveState) {
+            try {
+                if (filename == null)
+                    filename = "state" + n + ".txt";
+                File file = new File(getFilesDir(), filename);
+                FileOutputStream fileOut = new FileOutputStream(file);
+                ObjectOutputStream out = new ObjectOutputStream(fileOut);
+                out.writeObject(nS);
+                out.close();
+                fileOut.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
         }
     }
 
diff --git a/app/src/main/java/org/secuso/privacyfriendly2048/database/DatabaseExporter.java b/app/src/main/java/org/secuso/privacyfriendly2048/database/DatabaseExporter.java
index 1ed1c67..26fbde8 100644
--- a/app/src/main/java/org/secuso/privacyfriendly2048/database/DatabaseExporter.java
+++ b/app/src/main/java/org/secuso/privacyfriendly2048/database/DatabaseExporter.java
@@ -115,7 +115,7 @@ public ArrayList<String> getTableNames() {
 
         if (c.moveToFirst()) {
             while (!c.isAfterLast()) {
-                arrTblNames.add(c.getString(c.getColumnIndex("name")));
+                arrTblNames.add(c.getString(c.getColumnIndexOrThrow("name")));
                 c.moveToNext();
             }
         }
diff --git a/app/src/main/res/layout-land/activity_main.xml b/app/src/main/res/layout-land/activity_main.xml
index c176eef..f1dd0f8 100644
--- a/app/src/main/res/layout-land/activity_main.xml
+++ b/app/src/main/res/layout-land/activity_main.xml
@@ -48,7 +48,6 @@
                     android:layout_marginStart="@dimen/activity_horizontal_margin"
                     android:layout_weight="1"
                     android:background="?attr/selectableItemBackgroundBorderless"
-                    android:onClick="onClick"
                     android:padding="@dimen/activity_horizontal_margin"
                     android:src="@drawable/ic_keyboard_arrow_left_black_24dp" />
 
@@ -75,7 +74,6 @@
                     android:layout_marginRight="@dimen/activity_horizontal_margin"
                     android:layout_weight="1"
                     android:background="?attr/selectableItemBackgroundBorderless"
-                    android:onClick="onClick"
                     android:padding="10dp"
                     android:src="@drawable/ic_keyboard_arrow_right_black_24dp" />
             </RelativeLayout>
@@ -121,7 +119,6 @@
                     android:layout_weight="3"
                     android:background="@color/colorPrimary"
                     android:clickable="false"
-                    android:onClick="onClick"
                     android:text="@string/new_Game_Button"
                     android:textColor="@color/white"
                     android:textStyle="normal" />
@@ -137,7 +134,6 @@
                     android:layout_weight="3"
                     android:background="@color/colorPrimary"
                     android:clickable="false"
-                    android:onClick="onClick"
                     android:text="@string/continue_Game_Button"
                     android:textColor="@color/white"
                     android:textStyle="normal" />
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index ac13d54..71853c9 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -53,14 +53,13 @@
                     android:id="@+id/btn_prev"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:layout_alignParentLeft="true"
                     android:layout_alignParentStart="true"
+                    android:layout_alignParentLeft="true"
                     android:layout_centerVertical="true"
-                    android:layout_marginLeft="@dimen/activity_horizontal_margin"
                     android:layout_marginStart="@dimen/activity_horizontal_margin"
+                    android:layout_marginLeft="@dimen/activity_horizontal_margin"
                     android:layout_weight="1"
                     android:background="?attr/selectableItemBackgroundBorderless"
-                    android:onClick="onClick"
                     android:padding="@dimen/activity_horizontal_margin"
                     android:src="@drawable/ic_keyboard_arrow_left_black_24dp"
                     android:visibility="invisible" />
@@ -76,7 +75,6 @@
                     android:layout_marginRight="@dimen/activity_horizontal_margin"
                     android:layout_weight="1"
                     android:background="?attr/selectableItemBackgroundBorderless"
-                    android:onClick="onClick"
                     android:padding="10dp"
                     android:src="@drawable/ic_keyboard_arrow_right_black_24dp" />
             </RelativeLayout>
@@ -90,10 +88,10 @@
                 android:divider="#000"
                 android:gravity="center_horizontal"
                 android:orientation="vertical"
-                android:paddingBottom="@dimen/activity_vertical_margin"
                 android:paddingLeft="@dimen/activity_horizontal_margin"
-                android:paddingRight="@dimen/activity_horizontal_margin"
                 android:paddingTop="@dimen/activity_vertical_margin"
+                android:paddingRight="@dimen/activity_horizontal_margin"
+                android:paddingBottom="@dimen/activity_vertical_margin"
                 android:weightSum="5"
                 tools:context=".activities.MainActivity">
 
@@ -101,8 +99,8 @@
                     android:id="@+id/layoutDots"
                     android:layout_width="match_parent"
                     android:layout_height="0dp"
-                    android:layout_alignParentBottom="true"
                     android:layout_alignParentStart="true"
+                    android:layout_alignParentBottom="true"
                     android:layout_weight="1"
                     android:gravity="center"
                     android:orientation="horizontal">
@@ -115,12 +113,11 @@
                     android:layout_height="0dp"
                     android:layout_gravity="center_horizontal"
                     android:layout_marginLeft="20dp"
-                    android:layout_marginRight="20dp"
                     android:layout_marginTop="10dp"
+                    android:layout_marginRight="20dp"
                     android:layout_weight="2"
                     android:background="@drawable/standalone_button"
                     android:clickable="false"
-                    android:onClick="onClick"
                     android:text="@string/new_Game_Button"
                     android:textColor="@color/white"
                     android:textSize="25sp"
@@ -132,12 +129,11 @@
                     android:layout_height="0dp"
                     android:layout_gravity="center_horizontal"
                     android:layout_marginLeft="20dp"
-                    android:layout_marginRight="20dp"
                     android:layout_marginTop="10dp"
+                    android:layout_marginRight="20dp"
                     android:layout_weight="2"
                     android:background="@drawable/standalone_button"
                     android:clickable="false"
-                    android:onClick="onClick"
                     android:text="@string/continue_Game_Button"
                     android:textColor="@color/white"
                     android:textSize="25sp"
diff --git a/build.gradle b/build.gradle
index 2b34868..f369406 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,13 +2,13 @@
 
 buildscript {
     repositories {
-        jcenter()
+        mavenCentral()
         google()
     }
 
-    ext.kotlin_version = "1.7.20"
+    ext.kotlin_version = "1.9.10"
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.4.2'
+        classpath 'com.android.tools.build:gradle:8.1.4'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong
@@ -16,9 +16,13 @@ buildscript {
     }
 }
 
+plugins {
+    id 'com.google.devtools.ksp' version "$kotlin_version-1.0.13" apply false
+}
+
 allprojects {
     repositories {
-        jcenter()
+        mavenCentral()
         google()
     }
 }
diff --git a/gradle.properties b/gradle.properties
index 915f0e6..caa86e8 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -16,5 +16,9 @@
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
+android.defaults.buildfeatures.buildconfig=true
 android.enableJetifier=true
-android.useAndroidX=true
\ No newline at end of file
+android.nonFinalResIds=false
+android.nonTransitiveRClass=false
+android.useAndroidX=true
+org.gradle.jvmargs=-Xmx1536m
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index e25ae8d..d6576a9 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-7.5-bin.zip
\ No newline at end of file
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
\ No newline at end of file
diff --git a/libs/privacy-friendly-backup-api b/libs/privacy-friendly-backup-api
index 2548856..8687a8d 160000
--- a/libs/privacy-friendly-backup-api
+++ b/libs/privacy-friendly-backup-api
@@ -1 +1 @@
-Subproject commit 254885602ee4501a572f56306fbf2b3712cfc834
+Subproject commit 8687a8dbd170866707dc41bcb879375400ef697a