diff --git a/demo/android/Activity/build.gradle b/demo/android/Activity/build.gradle
index ad0091b2..56f710be 100644
--- a/demo/android/Activity/build.gradle
+++ b/demo/android/Activity/build.gradle
@@ -1,5 +1,5 @@
 ext {
-    defaultTargetSdkVersion = 31
+    defaultTargetSdkVersion = 33
 }
 
 buildscript {
@@ -19,6 +19,6 @@ allprojects {
     }
 }
 
-task clean(type: Delete) {
+tasks.register('clean', Delete) {
     delete rootProject.buildDir
 }
diff --git a/demo/android/Activity/cobra-activity-demo-app/build.gradle b/demo/android/Activity/cobra-activity-demo-app/build.gradle
index 34ebafac..1c31d586 100644
--- a/demo/android/Activity/cobra-activity-demo-app/build.gradle
+++ b/demo/android/Activity/cobra-activity-demo-app/build.gradle
@@ -1,7 +1,7 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion defaultTargetSdkVersion
+    compileSdk defaultTargetSdkVersion
 
     defaultConfig {
         applicationId "ai.picovoice.cobraactivitydemo"
@@ -25,6 +25,7 @@ android {
     lint {
         abortOnError false
     }
+    namespace 'ai.picovoice.cobraactivitydemo'
 }
 
 dependencies {
diff --git a/demo/android/Activity/cobra-activity-demo-app/src/main/AndroidManifest.xml b/demo/android/Activity/cobra-activity-demo-app/src/main/AndroidManifest.xml
index 240e3b30..3acad53b 100644
--- a/demo/android/Activity/cobra-activity-demo-app/src/main/AndroidManifest.xml
+++ b/demo/android/Activity/cobra-activity-demo-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="ai.picovoice.cobraactivitydemo">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />