diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5063735..9dd01bd8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [2.4.1] - 2019-10-20
+### Added
+- Added power trigger
+
 ## [2.4.0] - 2019-08-12
 ### Added
 - Added support Alpine Linux
diff --git a/app/build.gradle b/app/build.gradle
index 5c747593..ca134683 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,8 +8,8 @@ android {
         applicationId 'ru.meefik.linuxdeploy'
         minSdkVersion 15
         targetSdkVersion 28
-        versionCode 251
-        versionName "2.4.0"
+        versionCode 252
+        versionName "2.4.1"
     }
     buildTypes {
         release {
@@ -29,7 +29,7 @@ android {
 
 dependencies {
     implementation 'com.google.android.material:material:1.0.0'
-    implementation 'androidx.appcompat:appcompat:1.0.2'
+    implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.browser:browser:1.0.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 88577738..7c72f804 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,5 +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="ru.meefik.linuxdeploy"
     android:installLocation="internalOnly">
 
@@ -13,12 +14,12 @@
 
     <application
         android:name=".App"
-        android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/DarkTheme"
-        android:usesCleartextTraffic="true">
+        android:usesCleartextTraffic="true"
+        tools:ignore="GoogleAppIndexingWarning">
         <activity
             android:name=".MainActivity"
             android:label="@string/title_activity_main"
@@ -92,15 +93,6 @@
                 <action android:name="android.intent.action.ACTION_SHUTDOWN" />
             </intent-filter>
         </receiver>
-        <receiver
-            android:name="PowerReceiver"
-            android:enabled="false"
-            android:exported="false">
-            <intent-filter>
-                <action android:name="android.intent.action.SCREEN_ON" />
-                <action android:name="android.intent.action.SCREEN_OFF" />
-            </intent-filter>
-        </receiver>
         <receiver
             android:name=".ActionReceiver"
             android:enabled="true"
@@ -109,9 +101,14 @@
                 <action android:name="ru.meefik.linuxdeploy.BROADCAST_ACTION" />
             </intent-filter>
         </receiver>
+        <receiver
+            android:name=".PowerReceiver"
+            android:enabled="false"
+            android:exported="false">
+        </receiver>
         <receiver
             android:name=".NetworkReceiver"
-            android:enabled="true"
+            android:enabled="false"
             android:exported="false">
         </receiver>
 
diff --git a/app/src/main/assets/env b/app/src/main/assets/env
index aba3b497..55de0755 160000
--- a/app/src/main/assets/env
+++ b/app/src/main/assets/env
@@ -1 +1 @@
-Subproject commit aba3b49756309c3bc3c1765481bc3b797c9a7f28
+Subproject commit 55de07554712f03aad96bbd4b5281a1aee3ec348
diff --git a/app/src/main/java/ru/meefik/linuxdeploy/MainActivity.java b/app/src/main/java/ru/meefik/linuxdeploy/MainActivity.java
index 0d5f73d5..ed65a843 100644
--- a/app/src/main/java/ru/meefik/linuxdeploy/MainActivity.java
+++ b/app/src/main/java/ru/meefik/linuxdeploy/MainActivity.java
@@ -47,6 +47,7 @@ public class MainActivity extends AppCompatActivity implements
     private static PowerManager.WakeLock wakeLock;
 
     private NetworkReceiver networkReceiver;
+    private PowerReceiver powerReceiver;
 
     private NetworkReceiver getNetworkReceiver() {
         if (networkReceiver == null)
@@ -55,6 +56,13 @@ private NetworkReceiver getNetworkReceiver() {
         return networkReceiver;
     }
 
+    private PowerReceiver getPowerReceiver() {
+        if (powerReceiver == null)
+            powerReceiver = new PowerReceiver();
+
+        return powerReceiver;
+    }
+
     /**
      * Show message in TextView, used from Logger
      *
@@ -80,7 +88,9 @@ public void onCreate(Bundle savedInstanceState) {
         setContentView(R.layout.activity_main);
 
         ActionBar actionBar = getSupportActionBar();
-        actionBar.setDisplayHomeAsUpEnabled(true);
+        if (actionBar != null) {
+            actionBar.setDisplayHomeAsUpEnabled(true);
+        }
 
         DrawerLayout drawer = findViewById(R.id.drawer_layout);
         ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
@@ -113,6 +123,16 @@ public void onCreate(Bundle savedInstanceState) {
             unregisterReceiver(networkReceiver);
         }
 
+        // Power receiver
+        if (PrefStore.isPowerTrack(this)) {
+            IntentFilter filter = new IntentFilter();
+            filter.addAction(Intent.ACTION_SCREEN_ON);
+            filter.addAction(Intent.ACTION_SCREEN_OFF);
+            registerReceiver(getPowerReceiver(), filter);
+        } else if (powerReceiver != null) {
+            unregisterReceiver(powerReceiver);
+        }
+
         if (EnvUtils.isLatestVersion(this)) {
             // start services
             EnvUtils.execServices(getBaseContext(), new String[]{"telnetd", "httpd"}, "start");
@@ -269,7 +289,7 @@ public void onResume() {
 
         // Wake lock
         if (PrefStore.isWakeLock(this)) {
-            if (!wakeLock.isHeld()) wakeLock.acquire();
+            if (!wakeLock.isHeld()) wakeLock.acquire(60*60*1000L /*60 minutes*/);
         } else {
             if (wakeLock.isHeld()) wakeLock.release();
         }
@@ -420,13 +440,11 @@ private void updateEnvWithRequestPermissions() {
     @Override
     public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
         super.onRequestPermissionsResult(requestCode, permissions, grantResults);
-        switch (requestCode) {
-            case REQUEST_WRITE_STORAGE: {
-                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
-                    new UpdateEnvTask(this).execute();
-                } else {
-                    Toast.makeText(this, getString(R.string.write_permissions_disallow), Toast.LENGTH_LONG).show();
-                }
+        if (requestCode == REQUEST_WRITE_STORAGE) {
+            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                new UpdateEnvTask(this).execute();
+            } else {
+                Toast.makeText(this, getString(R.string.write_permissions_disallow), Toast.LENGTH_LONG).show();
             }
         }
     }
diff --git a/app/src/main/java/ru/meefik/linuxdeploy/PowerReceiver.java b/app/src/main/java/ru/meefik/linuxdeploy/PowerReceiver.java
index 5508d0ae..e5a55cf2 100644
--- a/app/src/main/java/ru/meefik/linuxdeploy/PowerReceiver.java
+++ b/app/src/main/java/ru/meefik/linuxdeploy/PowerReceiver.java
@@ -8,6 +8,10 @@ public class PowerReceiver extends BroadcastReceiver {
 
     @Override
     public void onReceive(final Context context, Intent intent) {
-        EnvUtils.execService(context, "start", "core/power");
+        if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
+            EnvUtils.execService(context, "stop", "core/power");
+        } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
+            EnvUtils.execService(context, "start", "core/power");
+        }
     }
 }
diff --git a/app/src/main/java/ru/meefik/linuxdeploy/PrefStore.java b/app/src/main/java/ru/meefik/linuxdeploy/PrefStore.java
index 470bff17..40e508fb 100644
--- a/app/src/main/java/ru/meefik/linuxdeploy/PrefStore.java
+++ b/app/src/main/java/ru/meefik/linuxdeploy/PrefStore.java
@@ -371,6 +371,16 @@ static Boolean isNetTrack(Context c) {
         return SETTINGS.get(c, "nettrack").equals("true");
     }
 
+    /**
+     * Track changes of the power status is enabled
+     *
+     * @param c context
+     * @return true if enabled
+     */
+    static Boolean isPowerTrack(Context c) {
+        return SETTINGS.get(c, "powertrack").equals("true");
+    }
+
     /**
      * Show icon is enabled
      *
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 5c8b3da2..dd94bf50 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -247,5 +247,9 @@
     <string name="hint_mounts_target">Целевая (опционально)</string>
     <string name="dialog_title_net_trigger_preference">Путь к скрипту триггера</string>
     <string name="title_net_trigger_preference">Сетевой триггер</string>
+    <string name="dialog_title_power_trigger_preference">Путь к скрипту триггера</string>
+    <string name="title_power_trigger_preference">Триггер питания</string>
+    <string name="summary_powertrack_preference">Отслеживать изменения питания и обновлять контейнер</string>
+    <string name="title_powertrack_preference">Отслеживать изменения питания</string>
 
 </resources>
diff --git a/app/src/main/res/values/preferences.xml b/app/src/main/res/values/preferences.xml
index d25b9ac0..62e5b283 100644
--- a/app/src/main/res/values/preferences.xml
+++ b/app/src/main/res/values/preferences.xml
@@ -13,6 +13,7 @@
     <string name="autostart" translatable="false">false</string>
     <string name="autostart_delay" translatable="false">30</string>
     <string name="nettrack" translatable="false">false</string>
+    <string name="powertrack" translatable="false">false</string>
     <string name="env_dir" translatable="false"></string>
     <string name="repository_url" translatable="false">http://hub.meefik.ru</string>
     <string name="path" translatable="false"></string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index c19bff76..aa3c1b2d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -103,6 +103,9 @@
     <!-- Network trigger -->
     <string name="title_nettrack_preference">Track network changes</string>
     <string name="summary_nettrack_preference">Track changes of the network and update the container</string>
+    <!-- Power trigger -->
+    <string name="title_powertrack_preference">Track power changes</string>
+    <string name="summary_powertrack_preference">Track changes of the power and update the container</string>
 
     <!-- ENVIRONMENT -->
     <string name="env_preferences">Environment</string>
diff --git a/app/src/main/res/xml/settings.xml b/app/src/main/res/xml/settings.xml
index 45efa4a3..223ebc1e 100644
--- a/app/src/main/res/xml/settings.xml
+++ b/app/src/main/res/xml/settings.xml
@@ -85,6 +85,11 @@
             android:key="nettrack"
             android:summary="@string/summary_nettrack_preference"
             android:title="@string/title_nettrack_preference" />
+        <CheckBoxPreference
+            android:defaultValue="@string/powertrack"
+            android:key="powertrack"
+            android:summary="@string/summary_powertrack_preference"
+            android:title="@string/title_powertrack_preference" />
     </PreferenceCategory>
     <PreferenceCategory android:title="@string/env_preferences">
         <EditTextPreference
diff --git a/build.gradle b/build.gradle
index 5600a933..31175778 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.0'
+        classpath 'com.android.tools.build:gradle:3.5.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files