diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index fb7f4a8..b589d56 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="11" />
+    <bytecodeTargetLevel target="17" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index b1f8730..9f71c83 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="Embedded JDK" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/build.gradle b/app/build.gradle
index 1be6081..debb400 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -27,11 +27,11 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
     }
     kotlinOptions {
-        jvmTarget = '1.8'
+        jvmTarget = '17'
     }
     buildFeatures {
         viewBinding true
diff --git a/app/src/main/java/com/denizk0461/studip/fragment/SettingsFragment.kt b/app/src/main/java/com/denizk0461/studip/fragment/SettingsFragment.kt
index 415e5c0..abdf4c7 100644
--- a/app/src/main/java/com/denizk0461/studip/fragment/SettingsFragment.kt
+++ b/app/src/main/java/com/denizk0461/studip/fragment/SettingsFragment.kt
@@ -12,6 +12,7 @@ import com.denizk0461.studip.BuildConfig
 import com.denizk0461.studip.R
 import com.denizk0461.studip.activity.FetcherActivity
 import com.denizk0461.studip.databinding.FragmentSettingsBinding
+import com.denizk0461.studip.sheet.DevCodeSheet
 import com.denizk0461.studip.sheet.TextSheet
 import com.denizk0461.studip.viewmodel.SettingsViewModel
 import java.text.SimpleDateFormat
@@ -104,6 +105,12 @@ class SettingsFragment : AppFragment() {
             )
         }
 
+        // Set long click listener for licences button to open dev code sheet
+        binding.buttonLicences.setOnLongClickListener {
+            openBottomSheet(DevCodeSheet())
+            true
+        }
+
         // Set click listener for the app version button
         binding.buttonAppVersion.setOnClickListener {
             when (appVersionClick) {
diff --git a/app/src/main/java/com/denizk0461/studip/sheet/DevCodeSheet.kt b/app/src/main/java/com/denizk0461/studip/sheet/DevCodeSheet.kt
new file mode 100644
index 0000000..a2314fa
--- /dev/null
+++ b/app/src/main/java/com/denizk0461/studip/sheet/DevCodeSheet.kt
@@ -0,0 +1,10 @@
+package com.denizk0461.studip.sheet
+
+import com.denizk0461.studip.R
+
+/**
+ * Sheet that presents the user / developer with a text field to input developer codes / cheat
+ * codes.
+ */
+class DevCodeSheet : AppSheet(R.layout.sheet_dev_code) {
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/sheet_dev_code.xml b/app/src/main/res/layout/sheet_dev_code.xml
new file mode 100644
index 0000000..7c3d378
--- /dev/null
+++ b/app/src/main/res/layout/sheet_dev_code.xml
@@ -0,0 +1,95 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.appcompat.widget.LinearLayoutCompat xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    app:layout_behavior="com.google.android.material.bottomsheet.BottomSheetBehavior">
+
+    <com.google.android.material.bottomsheet.BottomSheetDragHandleView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"/>
+
+    <TextView
+        android:id="@+id/text_header"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="22sp"
+        android:fontFamily="@font/lato_bolditalic"
+        android:paddingHorizontal="24dp"
+        android:layout_marginBottom="8dp"
+        android:text="@string/sheet_cheat_header"/>
+
+    <androidx.appcompat.widget.LinearLayoutCompat
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:scrollbars="horizontal">
+
+        <com.google.android.material.textfield.TextInputEditText
+            style="@style/Widget.Material3.TextInputEditText.OutlinedBox"
+            android:maxLines="1"
+            android:maxLength="1"
+            android:id="@+id/input_0"
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="2dp"/>
+
+        <com.google.android.material.textfield.TextInputEditText
+            style="@style/Widget.Material3.TextInputEditText.OutlinedBox"
+            android:maxLines="1"
+            android:maxLength="1"
+            android:id="@+id/input_1"
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="2dp"
+            android:layout_marginEnd="2dp"/>
+
+        <com.google.android.material.textfield.TextInputEditText
+            style="@style/Widget.Material3.TextInputEditText.OutlinedBox"
+            android:maxLines="1"
+            android:maxLength="1"
+            android:id="@+id/input_2"
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="2dp"
+            android:layout_marginEnd="2dp"/>
+
+        <com.google.android.material.textfield.TextInputEditText
+            style="@style/Widget.Material3.TextInputEditText.OutlinedBox"
+            android:maxLines="1"
+            android:maxLength="1"
+            android:id="@+id/input_3"
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="2dp"
+            android:layout_marginEnd="2dp"/>
+
+        <com.google.android.material.textfield.TextInputEditText
+            style="@style/Widget.Material3.TextInputEditText.OutlinedBox"
+            android:maxLines="1"
+            android:maxLength="1"
+            android:id="@+id/input_4"
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="2dp"
+            android:layout_marginEnd="2dp"/>
+
+        <com.google.android.material.textfield.TextInputEditText
+            style="@style/Widget.Material3.TextInputEditText.OutlinedBox"
+            android:maxLines="1"
+            android:maxLength="1"
+            android:id="@+id/input_5"
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="2dp"/>
+
+    </androidx.appcompat.widget.LinearLayoutCompat>
+
+</androidx.appcompat.widget.LinearLayoutCompat>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 0583c21..783903d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -136,6 +136,9 @@
 
     <string name="settings_licences_title">View licences</string>
     <string name="settings_licences_subtitle">Resources that made this app possible</string>
+
+    <string name="sheet_cheat_header" translatable="false">Cheat Codes</string>
+
     <string name="settings_app_version">App Version</string>
 
     <string name="with_love">with ♡️ from Bremen-Osterholz\nmade by denizk0461 \\__*</string>
diff --git a/build.gradle b/build.gradle
index 71ad002..8f8bf02 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '7.4.2' apply false
-    id 'com.android.library' version '7.4.2' apply false
+    id 'com.android.application' version '8.0.0' apply false
+    id 'com.android.library' version '8.0.0' apply false
     id 'org.jetbrains.kotlin.android' version '1.8.20' apply false
 }
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
index 3c5031e..a2e90d8 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -20,4 +20,6 @@ kotlin.code.style=official
 # Enables namespacing of each library's R class so that its R class includes only the
 # resources declared in the library itself and none from the library's dependencies,
 # thereby reducing the size of the R class for that library
-android.nonTransitiveRClass=true
\ No newline at end of file
+android.nonTransitiveRClass=true
+android.defaults.buildfeatures.buildconfig=true
+android.nonFinalResIds=false
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 7628f1a..527d07b 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 #Sat Apr 08 11:18:54 CEST 2023
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME