diff --git a/apps/app_demo_slproject/android/README.md b/apps/app_demo_slproject/android/README.md
index 5c67c5ae..af9d3934 100644
--- a/apps/app_demo_slproject/android/README.md
+++ b/apps/app_demo_slproject/android/README.md
@@ -18,6 +18,7 @@
   * Install **cmake** if the IDE states it as missing.
 * Build the project with **Hammer button** or with **Build > Make Project (Ctrl-F9)**
   * The app can only run on real but not on virtual devices because the prebuilt OpenCV libraries (_lib/prebuilt/Android) are only built for the arm architectures armeabi-v7a and arm64-v8a. To run the app in a virtual device you would have to build OpenCV also for Android on the x86 architecture.
+* Your connected device must be enabled for development. See development settings under the system settings. Also the device must allow USB Debugging under the development settings.
 * After successful build you can start the app on a USB-connected device by clicking the **green start button**.
   * If your device is not listed in the **Deployment Targets** dialog please check again your USB driver. In some cases, you have to download the appropriate driver from the device manufacturer.
 
diff --git a/apps/app_demo_slproject/android/app/build.gradle b/apps/app_demo_slproject/android/app/build.gradle
index 7e0f1060..a3faacfa 100644
--- a/apps/app_demo_slproject/android/app/build.gradle
+++ b/apps/app_demo_slproject/android/app/build.gradle
@@ -33,12 +33,6 @@ android {
             assets.srcDirs = ['src/main/assets']
         }
     }
-    lintOptions {
-        checkReleaseBuilds false
-        // Or, if you prefer, you can continue to check for errors in release builds,
-        // but continue the build even when errors are found:
-        abortOnError false
-    }
     buildTypes {
         release {
             minifyEnabled false
@@ -59,6 +53,11 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
     }
     ndkVersion '21.4.7075529'
+    namespace 'ch.bfh.cpvrlab'
+    lint {
+        abortOnError false
+        checkReleaseBuilds false
+    }
 }
 
 dependencies {
diff --git a/apps/app_demo_slproject/android/app/src/main/AndroidManifest.xml b/apps/app_demo_slproject/android/app/src/main/AndroidManifest.xml
index a4b9764f..678fdafd 100644
--- a/apps/app_demo_slproject/android/app/src/main/AndroidManifest.xml
+++ b/apps/app_demo_slproject/android/app/src/main/AndroidManifest.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="ch.bfh.cpvrlab"
     android:versionCode="2"
     android:versionName="3.0.000">
 
diff --git a/apps/app_demo_slproject/android/build.gradle b/apps/app_demo_slproject/android/build.gradle
index 4204f96d..ddd2768c 100644
--- a/apps/app_demo_slproject/android/build.gradle
+++ b/apps/app_demo_slproject/android/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.2.1'
+        classpath 'com.android.tools.build:gradle:8.1.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/apps/app_demo_slproject/android/gradle.properties b/apps/app_demo_slproject/android/gradle.properties
index 4b3e30f5..fa09e36d 100644
--- a/apps/app_demo_slproject/android/gradle.properties
+++ b/apps/app_demo_slproject/android/gradle.properties
@@ -20,3 +20,6 @@ org.gradle.daemon=true
 org.gradle.warning.mode=all
 android.useAndroidX=true
 android.enableJetifier=true
+android.defaults.buildfeatures.buildconfig=true
+android.nonTransitiveRClass=false
+android.nonFinalResIds=false
diff --git a/apps/app_demo_slproject/android/gradle/wrapper/gradle-wrapper.properties b/apps/app_demo_slproject/android/gradle/wrapper/gradle-wrapper.properties
index cb4b1458..795abbcf 100644
--- a/apps/app_demo_slproject/android/gradle/wrapper/gradle-wrapper.properties
+++ b/apps/app_demo_slproject/android/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-6.7.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip