diff --git a/build.gradle b/build.gradle
index dce2b1a10..979460547 100644
--- a/build.gradle
+++ b/build.gradle
@@ -12,7 +12,7 @@ project.ext {
     // AndroidX
     annotationVersion = "1.4.0"
     appcompatVersion = "1.5.1"
-    coreVersion = "1.8.0"
+    coreVersion = "1.9.0"
     fragmentVersion = "1.5.5"
     mediaVersion = "1.6.0"
     media3Version = "1.1.1"
diff --git a/core/build.gradle b/core/build.gradle
index 6683db189..ed4236e5b 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -10,7 +10,7 @@ android {
     lint {
         disable "InvalidPeriodicWorkRequestInterval", "ObsoleteLintCustomCheck", "DefaultLocale", "UnusedAttribute",
                 "ParcelClassLoader", "CheckResult", "TrustAllX509TrustManager",
-                "StaticFieldLeak", "IconDensities", "IconDuplicates"
+                "StaticFieldLeak", "IconDensities", "IconDuplicates", "UnsafeOptInUsageError"
     }
 
     defaultConfig {
diff --git a/core/src/main/AndroidManifest.xml b/core/src/main/AndroidManifest.xml
index 99fd3de05..fc673ef5f 100644
--- a/core/src/main/AndroidManifest.xml
+++ b/core/src/main/AndroidManifest.xml
@@ -10,6 +10,7 @@
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.BLUETOOTH" />
     <uses-permission android:name="android.permission.VIBRATE" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
 
     <application
         android:allowBackup="true"
diff --git a/core/src/main/java/de/danoeh/antennapod/core/service/FeedUpdateWorker.java b/core/src/main/java/de/danoeh/antennapod/core/service/FeedUpdateWorker.java
index 6eba80c94..2ec938730 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/service/FeedUpdateWorker.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/service/FeedUpdateWorker.java
@@ -1,12 +1,15 @@
 package de.danoeh.antennapod.core.service;
 
+import android.Manifest;
 import android.app.Notification;
 import android.content.Context;
+import android.content.pm.PackageManager;
 import android.util.Log;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.app.NotificationCompat;
 import androidx.core.app.NotificationManagerCompat;
+import androidx.core.content.ContextCompat;
 import androidx.work.ForegroundInfo;
 import androidx.work.WorkManager;
 import androidx.work.Worker;
@@ -135,7 +138,10 @@ public class FeedUpdateWorker extends Worker {
             if (isStopped()) {
                 return;
             }
-            notificationManager.notify(R.id.notification_updating_feeds, createNotification(toUpdate));
+            if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.POST_NOTIFICATIONS)
+                    == PackageManager.PERMISSION_GRANTED) {
+                notificationManager.notify(R.id.notification_updating_feeds, createNotification(toUpdate));
+            }
             Feed feed = toUpdate.get(0);
             try {
                 if (feed.isLocalFeed()) {
diff --git a/core/src/main/java/de/danoeh/antennapod/core/service/download/EpisodeDownloadWorker.java b/core/src/main/java/de/danoeh/antennapod/core/service/download/EpisodeDownloadWorker.java
index d35a838dc..1e943eed8 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/service/download/EpisodeDownloadWorker.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/service/download/EpisodeDownloadWorker.java
@@ -1,14 +1,17 @@
 package de.danoeh.antennapod.core.service.download;
 
+import android.Manifest;
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.os.Build;
 import android.util.Log;
 import androidx.annotation.NonNull;
 import androidx.core.app.NotificationCompat;
+import androidx.core.content.ContextCompat;
 import androidx.work.Data;
 import androidx.work.ForegroundInfo;
 import androidx.work.Worker;
@@ -77,7 +80,10 @@ public class EpisodeDownloadWorker extends Worker {
                                 .get();
                         NotificationManager nm = (NotificationManager) getApplicationContext()
                                 .getSystemService(Context.NOTIFICATION_SERVICE);
-                        nm.notify(R.id.notification_downloading, generateProgressNotification());
+                        if (ContextCompat.checkSelfPermission(getApplicationContext(),
+                                Manifest.permission.POST_NOTIFICATIONS) == PackageManager.PERMISSION_GRANTED) {
+                            nm.notify(R.id.notification_downloading, generateProgressNotification());
+                        }
                         Thread.sleep(1000);
                     } catch (InterruptedException | ExecutionException e) {
                         return;
@@ -252,7 +258,10 @@ public class EpisodeDownloadWorker extends Worker {
         builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC);
         NotificationManager nm = (NotificationManager) getApplicationContext()
                 .getSystemService(Context.NOTIFICATION_SERVICE);
-        nm.notify(R.id.notification_download_report, builder.build());
+        if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.POST_NOTIFICATIONS)
+                == PackageManager.PERMISSION_GRANTED) {
+            nm.notify(R.id.notification_download_report, builder.build());
+        }
     }
 
     private Notification generateProgressNotification() {
diff --git a/core/src/main/java/de/danoeh/antennapod/core/service/download/NewEpisodesNotification.java b/core/src/main/java/de/danoeh/antennapod/core/service/download/NewEpisodesNotification.java
index ab24b5a84..eff5816be 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/service/download/NewEpisodesNotification.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/service/download/NewEpisodesNotification.java
@@ -1,10 +1,12 @@
 package de.danoeh.antennapod.core.service.download;
 
+import android.Manifest;
 import android.app.Notification;
 import android.app.PendingIntent;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.content.res.Resources;
 
 import android.graphics.Bitmap;
@@ -12,6 +14,7 @@ import android.os.Build;
 import android.util.Log;
 import androidx.core.app.NotificationCompat;
 import androidx.core.app.NotificationManagerCompat;
+import androidx.core.content.ContextCompat;
 
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.request.RequestOptions;
@@ -84,8 +87,11 @@ public class NewEpisodesNotification {
                 .setOnlyAlertOnce(true)
                 .setAutoCancel(true)
                 .build();
-
-        notificationManager.notify(NotificationUtils.CHANNEL_ID_EPISODE_NOTIFICATIONS, feed.hashCode(), notification);
+        if (ContextCompat.checkSelfPermission(context, Manifest.permission.POST_NOTIFICATIONS)
+                == PackageManager.PERMISSION_GRANTED) {
+            notificationManager.notify(NotificationUtils.CHANNEL_ID_EPISODE_NOTIFICATIONS,
+                    feed.hashCode(), notification);
+        }
         showGroupSummaryNotification(context, notificationManager);
     }
 
@@ -109,7 +115,11 @@ public class NewEpisodesNotification {
                 .setOnlyAlertOnce(true)
                 .setAutoCancel(true)
                 .build();
-        notificationManager.notify(NotificationUtils.CHANNEL_ID_EPISODE_NOTIFICATIONS, 0, notificationGroupSummary);
+        if (ContextCompat.checkSelfPermission(context, Manifest.permission.POST_NOTIFICATIONS)
+                == PackageManager.PERMISSION_GRANTED) {
+            notificationManager.notify(NotificationUtils.CHANNEL_ID_EPISODE_NOTIFICATIONS,
+                    0, notificationGroupSummary);
+        }
     }
 
     private static Bitmap loadIcon(Context context, Feed feed) {
diff --git a/core/src/main/java/de/danoeh/antennapod/core/service/playback/PlaybackService.java b/core/src/main/java/de/danoeh/antennapod/core/service/playback/PlaybackService.java
index 8ffc377e8..f34a9ba8e 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/service/playback/PlaybackService.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/service/playback/PlaybackService.java
@@ -2,6 +2,7 @@ package de.danoeh.antennapod.core.service.playback;
 
 import static de.danoeh.antennapod.model.feed.FeedPreferences.SPEED_USE_GLOBAL;
 
+import android.Manifest;
 import android.annotation.SuppressLint;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
@@ -14,6 +15,7 @@ import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.media.AudioManager;
 import android.net.Uri;
@@ -45,6 +47,7 @@ import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
 import androidx.core.app.NotificationCompat;
 import androidx.core.app.NotificationManagerCompat;
+import androidx.core.content.ContextCompat;
 import androidx.media.MediaBrowserServiceCompat;
 
 import de.danoeh.antennapod.ui.notifications.NotificationUtils;
@@ -303,7 +306,10 @@ public class PlaybackService extends MediaBrowserServiceCompat {
         if (notificationBuilder.getPlayerStatus() == PlayerStatus.PLAYING) {
             notificationBuilder.setPlayerStatus(PlayerStatus.STOPPED);
             NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
-            notificationManager.notify(R.id.notification_playing, notificationBuilder.build());
+            if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.POST_NOTIFICATIONS)
+                    == PackageManager.PERMISSION_GRANTED) {
+                notificationManager.notify(R.id.notification_playing, notificationBuilder.build());
+            }
         }
         stateManager.stopForeground(!UserPreferences.isPersistNotify());
         isRunning = false;
@@ -628,7 +634,10 @@ public class PlaybackService extends MediaBrowserServiceCompat {
                         pendingIntentAlwaysAllow)
                 .setAutoCancel(true);
         NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
-        notificationManager.notify(R.id.notification_streaming_confirmation, builder.build());
+        if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.POST_NOTIFICATIONS)
+                == PackageManager.PERMISSION_GRANTED) {
+            notificationManager.notify(R.id.notification_streaming_confirmation, builder.build());
+        }
     }
 
     /**
@@ -1394,14 +1403,20 @@ public class PlaybackService extends MediaBrowserServiceCompat {
         notificationBuilder.updatePosition(getCurrentPosition(), getCurrentPlaybackSpeed());
 
         NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
-        notificationManager.notify(R.id.notification_playing, notificationBuilder.build());
+        if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.POST_NOTIFICATIONS)
+                == PackageManager.PERMISSION_GRANTED) {
+            notificationManager.notify(R.id.notification_playing, notificationBuilder.build());
+        }
 
         if (!notificationBuilder.isIconCached()) {
             playableIconLoaderThread = new Thread(() -> {
                 Log.d(TAG, "Loading notification icon");
                 notificationBuilder.loadIcon();
                 if (!Thread.currentThread().isInterrupted()) {
-                    notificationManager.notify(R.id.notification_playing, notificationBuilder.build());
+                    if (ContextCompat.checkSelfPermission(getApplicationContext(),
+                            Manifest.permission.POST_NOTIFICATIONS) == PackageManager.PERMISSION_GRANTED) {
+                        notificationManager.notify(R.id.notification_playing, notificationBuilder.build());
+                    }
                     updateMediaSessionMetadata(playable);
                 }
             });
@@ -1779,7 +1794,10 @@ public class PlaybackService extends MediaBrowserServiceCompat {
                         notificationBuilder.updatePosition(getCurrentPosition(), getCurrentPlaybackSpeed());
                         NotificationManager notificationManager = (NotificationManager)
                                 getSystemService(NOTIFICATION_SERVICE);
-                        notificationManager.notify(R.id.notification_playing, notificationBuilder.build());
+                        if (ContextCompat.checkSelfPermission(getApplicationContext(),
+                                Manifest.permission.POST_NOTIFICATIONS) == PackageManager.PERMISSION_GRANTED) {
+                            notificationManager.notify(R.id.notification_playing, notificationBuilder.build());
+                        }
                     }
                     skipEndingIfNecessary();
                 });
diff --git a/core/src/main/java/de/danoeh/antennapod/core/sync/SyncService.java b/core/src/main/java/de/danoeh/antennapod/core/sync/SyncService.java
index 86730b58c..3ee7c2b54 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/sync/SyncService.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/sync/SyncService.java
@@ -1,15 +1,18 @@
 package de.danoeh.antennapod.core.sync;
 
+import android.Manifest;
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.os.Build;
 import android.util.Log;
 
 import androidx.annotation.NonNull;
 import androidx.core.app.NotificationCompat;
+import androidx.core.content.ContextCompat;
 import androidx.core.util.Pair;
 import androidx.work.BackoffPolicy;
 import androidx.work.Constraints;
@@ -329,7 +332,10 @@ public class SyncService extends Worker {
                 .build();
         NotificationManager nm = (NotificationManager) getApplicationContext()
                 .getSystemService(Context.NOTIFICATION_SERVICE);
-        nm.notify(R.id.notification_gpodnet_sync_error, notification);
+        if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.POST_NOTIFICATIONS)
+                == PackageManager.PERMISSION_GRANTED) {
+            nm.notify(R.id.notification_gpodnet_sync_error, notification);
+        }
     }
 
     private static OneTimeWorkRequest.Builder getWorkRequest() {