diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 30eee5883b..e0c1e0da70 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -1,5 +1,12 @@
 # Release notes
 
+### dev-v2 (not yet released)
+
+*   UI:
+    *   Add `PendingIntent.FLAG_IMMUTABLE` flag when creating a broadcast intent
+        in `PlayerNotificationManager`. This is required to avoid an error on
+        Android 12.
+
 ### 2.14.1 (2021-06-11)
 
 *   Core Library:
diff --git a/library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerNotificationManager.java b/library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerNotificationManager.java
index 3139cd451d..6c3441a849 100644
--- a/library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerNotificationManager.java
+++ b/library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerNotificationManager.java
@@ -1598,8 +1598,15 @@ public class PlayerNotificationManager {
       String action, Context context, int instanceId) {
     Intent intent = new Intent(action).setPackage(context.getPackageName());
     intent.putExtra(EXTRA_INSTANCE_ID, instanceId);
-    return PendingIntent.getBroadcast(
-        context, instanceId, intent, PendingIntent.FLAG_UPDATE_CURRENT);
+
+    int pendingFlags;
+    if (Util.SDK_INT >= 23) {
+      pendingFlags = PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE;
+    } else {
+      pendingFlags = PendingIntent.FLAG_UPDATE_CURRENT;
+    }
+
+    return PendingIntent.getBroadcast(context, instanceId, intent, pendingFlags);
   }
 
   @SuppressWarnings("nullness:argument.type.incompatible")