diff --git a/app/build.gradle b/app/build.gradle
index 72a03e063..6978fec57 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,14 +8,14 @@ plugins {
 }
 
 android {
-    compileSdk 32
+    compileSdk 33
     namespace 'org.schabi.newpipe'
 
     defaultConfig {
         applicationId "org.schabi.newpipe"
         resValue "string", "app_name", "NewPipe"
         minSdk 21
-        targetSdk 29
+        targetSdk 33
         versionCode 991
         versionName "0.24.1"
 
@@ -107,7 +107,7 @@ ext {
     groupieVersion = '2.10.1'
     markwonVersion = '4.6.2'
 
-    leakCanaryVersion = '2.5'
+    leakCanaryVersion = '2.9.1'
     stethoVersion = '1.6.0'
     mockitoVersion = '4.0.0'
     assertJVersion = '3.23.1'
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 3ca19e8c0..3e987abdb 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -9,6 +9,7 @@
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
 
     <uses-feature
         android:name="android.hardware.touchscreen"
@@ -24,11 +25,12 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:logo="@mipmap/ic_launcher"
-        android:theme="@style/OpeningTheme"
         android:resizeableActivity="true"
+        android:theme="@style/OpeningTheme"
         tools:ignore="AllowBackup">
         <activity
             android:name=".MainActivity"
+            android:exported="true"
             android:label="@string/app_name"
             android:launchMode="singleTask">
             <intent-filter>
@@ -39,7 +41,9 @@
             </intent-filter>
         </activity>
 
-        <receiver android:name="androidx.media.session.MediaButtonReceiver">
+        <receiver
+            android:name="androidx.media.session.MediaButtonReceiver"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MEDIA_BUTTON" />
             </intent-filter>
@@ -47,7 +51,7 @@
 
         <service
             android:name=".player.PlayerService"
-            android:exported="false"
+            android:exported="true"
             android:foregroundServiceType="mediaPlayback">
             <intent-filter>
                 <action android:name="android.intent.action.MEDIA_BUTTON" />
@@ -56,15 +60,18 @@
 
         <activity
             android:name=".player.PlayQueueActivity"
+            android:exported="false"
             android:label="@string/title_activity_play_queue"
             android:launchMode="singleTask" />
 
         <activity
             android:name=".settings.SettingsActivity"
+            android:exported="false"
             android:label="@string/settings" />
 
         <activity
             android:name=".about.AboutActivity"
+            android:exported="false"
             android:label="@string/title_activity_about" />
 
         <service android:name=".local.subscription.services.SubscriptionsImportService" />
@@ -73,6 +80,7 @@
 
         <activity
             android:name=".PanicResponderActivity"
+            android:exported="true"
             android:launchMode="singleInstance"
             android:noHistory="true"
             android:theme="@android:style/Theme.NoDisplay">
@@ -85,13 +93,18 @@
 
         <activity
             android:name=".ExitActivity"
+            android:exported="false"
             android:label="@string/general_error"
             android:theme="@android:style/Theme.NoDisplay" />
-        <activity android:name=".error.ErrorActivity" />
+
+        <activity
+            android:name=".error.ErrorActivity"
+            android:exported="false" />
 
         <!-- giga get related -->
         <activity
             android:name=".download.DownloadActivity"
+            android:exported="false"
             android:label="@string/app_name"
             android:launchMode="singleTask" />
 
@@ -99,6 +112,7 @@
 
         <activity
             android:name=".util.FilePickerActivityHelper"
+            android:exported="true"
             android:label="@string/app_name"
             android:theme="@style/FilePickerThemeDark">
             <intent-filter>
@@ -109,6 +123,7 @@
 
         <activity
             android:name=".error.ReCaptchaActivity"
+            android:exported="false"
             android:label="@string/recaptcha" />
 
         <provider
@@ -124,6 +139,7 @@
         <activity
             android:name=".RouterActivity"
             android:excludeFromRecents="true"
+            android:exported="true"
             android:label="@string/preferred_open_action_share_menu_title"
             android:taskAffinity=""
             android:theme="@style/RouterActivityThemeDark">
@@ -353,30 +369,30 @@
 
             <!-- Bandcamp filter for tracks, albums and playlists -->
             <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
-                <action android:name="android.media.action.MEDIA_PLAY_FROM_SEARCH"/>
-                <action android:name="android.nfc.action.NDEF_DISCOVERED"/>
+                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.media.action.MEDIA_PLAY_FROM_SEARCH" />
+                <action android:name="android.nfc.action.NDEF_DISCOVERED" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="http"/>
-                <data android:scheme="https"/>
-                <data android:host="*.bandcamp.com"/>
+                <data android:scheme="http" />
+                <data android:scheme="https" />
+                <data android:host="*.bandcamp.com" />
             </intent-filter>
 
             <!-- Bandcamp filter for radio -->
             <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
-                <action android:name="android.media.action.MEDIA_PLAY_FROM_SEARCH"/>
-                <action android:name="android.nfc.action.NDEF_DISCOVERED"/>
+                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.media.action.MEDIA_PLAY_FROM_SEARCH" />
+                <action android:name="android.nfc.action.NDEF_DISCOVERED" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="http"/>
-                <data android:scheme="https"/>
-                <data android:sspPattern="bandcamp.com/?show=*"/>
+                <data android:scheme="http" />
+                <data android:scheme="https" />
+                <data android:sspPattern="bandcamp.com/?show=*" />
             </intent-filter>
 
         </activity>
@@ -385,11 +401,17 @@
             android:exported="false" />
 
         <!-- opting out of sending metrics to Google in Android System WebView -->
-        <meta-data android:name="android.webkit.WebView.MetricsOptOut" android:value="true" />
+        <meta-data
+            android:name="android.webkit.WebView.MetricsOptOut"
+            android:value="true" />
         <!-- see https://github.com/TeamNewPipe/NewPipe/issues/3947 -->
         <!-- Version < 3.0. DeX Mode and Screen Mirroring support -->
-        <meta-data android:name="com.samsung.android.keepalive.density" android:value="true"/>
+        <meta-data
+            android:name="com.samsung.android.keepalive.density"
+            android:value="true" />
         <!-- Version >= 3.0. DeX Dual Mode support -->
-        <meta-data android:name="com.samsung.android.multidisplay.keep_process_alive" android:value="true"/>
+        <meta-data
+            android:name="com.samsung.android.multidisplay.keep_process_alive"
+            android:value="true" />
     </application>
 </manifest>
diff --git a/app/src/main/java/org/schabi/newpipe/MainActivity.java b/app/src/main/java/org/schabi/newpipe/MainActivity.java
index 0f82c8a9f..73a81450e 100644
--- a/app/src/main/java/org/schabi/newpipe/MainActivity.java
+++ b/app/src/main/java/org/schabi/newpipe/MainActivity.java
@@ -157,9 +157,12 @@ public class MainActivity extends AppCompatActivity {
         }
         openMiniPlayerUponPlayerStarted();
 
-        // Schedule worker for checking for new streams and creating corresponding notifications
-        // if this is enabled by the user.
-        NotificationWorker.initialize(this);
+        if (PermissionHelper.checkPostNotificationsPermission(this,
+                PermissionHelper.POST_NOTIFICATIONS_REQUEST_CODE)) {
+            // Schedule worker for checking for new streams and creating corresponding notifications
+            // if this is enabled by the user.
+            NotificationWorker.initialize(this);
+        }
     }
 
     @Override
@@ -599,6 +602,9 @@ public class MainActivity extends AppCompatActivity {
                     ((VideoDetailFragment) fragment).openDownloadDialog();
                 }
                 break;
+            case PermissionHelper.POST_NOTIFICATIONS_REQUEST_CODE:
+                NotificationWorker.initialize(this);
+                break;
         }
     }
 
diff --git a/app/src/main/java/org/schabi/newpipe/player/gesture/PopupPlayerGestureListener.kt b/app/src/main/java/org/schabi/newpipe/player/gesture/PopupPlayerGestureListener.kt
index 666ea6a46..a540c0ab0 100644
--- a/app/src/main/java/org/schabi/newpipe/player/gesture/PopupPlayerGestureListener.kt
+++ b/app/src/main/java/org/schabi/newpipe/player/gesture/PopupPlayerGestureListener.kt
@@ -160,15 +160,15 @@ class PopupPlayerGestureListener(
         }
     }
 
-    override fun onLongPress(e: MotionEvent?) {
+    override fun onLongPress(e: MotionEvent) {
         playerUi.updateScreenSize()
         playerUi.checkPopupPositionBounds()
         playerUi.changePopupSize(playerUi.screenWidth)
     }
 
     override fun onFling(
-        e1: MotionEvent?,
-        e2: MotionEvent?,
+        e1: MotionEvent,
+        e2: MotionEvent,
         velocityX: Float,
         velocityY: Float
     ): Boolean {
diff --git a/app/src/main/java/org/schabi/newpipe/util/PermissionHelper.java b/app/src/main/java/org/schabi/newpipe/util/PermissionHelper.java
index f3151ec8b..f47494770 100644
--- a/app/src/main/java/org/schabi/newpipe/util/PermissionHelper.java
+++ b/app/src/main/java/org/schabi/newpipe/util/PermissionHelper.java
@@ -21,6 +21,7 @@ import org.schabi.newpipe.R;
 import org.schabi.newpipe.settings.NewPipeSettings;
 
 public final class PermissionHelper {
+    public static final int POST_NOTIFICATIONS_REQUEST_CODE = 779;
     public static final int DOWNLOAD_DIALOG_REQUEST_CODE = 778;
     public static final int DOWNLOADS_REQUEST_CODE = 777;
 
@@ -71,8 +72,7 @@ public final class PermissionHelper {
 
             // No explanation needed, we can request the permission.
             ActivityCompat.requestPermissions(activity,
-                    new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
-                    requestCode);
+                    new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
 
             // PERMISSION_WRITE_STORAGE is an
             // app-defined int constant. The callback method gets the
@@ -83,6 +83,18 @@ public final class PermissionHelper {
         return true;
     }
 
+    public static boolean checkPostNotificationsPermission(final Activity activity,
+                                                           final int requestCode) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU
+                && ContextCompat.checkSelfPermission(activity,
+                Manifest.permission.POST_NOTIFICATIONS)
+                != PackageManager.PERMISSION_GRANTED) {
+            ActivityCompat.requestPermissions(activity,
+                    new String[] {Manifest.permission.POST_NOTIFICATIONS}, requestCode);
+            return false;
+        }
+        return true;
+    }
 
     /**
      * In order to be able to draw over other apps,