diff --git a/activitytasklib/build.gradle b/activitytasklib/build.gradle
index 5ed6d2a..15e5e99 100644
--- a/activitytasklib/build.gradle
+++ b/activitytasklib/build.gradle
@@ -7,6 +7,7 @@ task generateSourcesJar(type: Jar){
 }
 
 android {
+    namespace "cc.rome753.activitytasklib"
     compileSdkVersion 31
 
     defaultConfig {
diff --git a/activitytasklib/src/main/AndroidManifest.xml b/activitytasklib/src/main/AndroidManifest.xml
index d1e3f49..4fc8605 100644
--- a/activitytasklib/src/main/AndroidManifest.xml
+++ b/activitytasklib/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="cc.rome753.activitytasklib">
+    xmlns:tools="http://schemas.android.com/tools">
     <application>
         <provider
             android:name="androidx.startup.InitializationProvider"
diff --git a/activitytaskview/build.gradle b/activitytaskview/build.gradle
index ff4e05e..e1ee6c6 100644
--- a/activitytaskview/build.gradle
+++ b/activitytaskview/build.gradle
@@ -1,6 +1,7 @@
 apply plugin: 'com.android.application'
 
 android {
+    namespace "cc.rome753.activitytask"
     compileSdkVersion 31
     defaultConfig {
         applicationId "cc.rome753.activitytask"
diff --git a/activitytaskview/src/main/AndroidManifest.xml b/activitytaskview/src/main/AndroidManifest.xml
index 07c74dd..bf330a2 100644
--- a/activitytaskview/src/main/AndroidManifest.xml
+++ b/activitytaskview/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="cc.rome753.activitytask">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
 
diff --git a/app/build.gradle b/app/build.gradle
index 0f2c3b0..4941706 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,6 +1,7 @@
 apply plugin: 'com.android.application'
 
 android {
+    namespace "cc.rome753.demo"
     compileSdkVersion 31
     defaultConfig {
         applicationId "cc.rome753.activitytask.demo"
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index ad24c15..b7df508 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/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="cc.rome753.demo">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <application
         android:name=".DemoApplication"