diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index a7505e8f69..3121405d32 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -45,6 +45,8 @@
 *   HLS
     *   Use the PRECISE attribute in EXT-X-START to select the default start
         position.
+*   PlayerNotificationManager:
+    *   Add `PendingIntent.FLAG_IMMUTABLE` flag to BroadcastReceiver to support Android 12.
 
 ### 2.14.0 (2021-05-13)
 
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 2b6e995370..2c17a39ef7 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
@@ -1380,8 +1380,15 @@ 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")