diff --git a/packages/android_alarm_manager_plus/CHANGELOG.md b/packages/android_alarm_manager_plus/CHANGELOG.md
index 7fc79512c9..62b5336b73 100644
--- a/packages/android_alarm_manager_plus/CHANGELOG.md
+++ b/packages/android_alarm_manager_plus/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.3.1
+
+- Fix `PendingIntent`s for Android 12+
+
 ## 1.3.0
 
 - migrate integration_test to flutter sdk
diff --git a/packages/android_alarm_manager_plus/android/src/main/java/dev/fluttercommunity/plus/androidalarmmanager/AlarmService.java b/packages/android_alarm_manager_plus/android/src/main/java/dev/fluttercommunity/plus/androidalarmmanager/AlarmService.java
index 72d07b3a3d..3086300965 100644
--- a/packages/android_alarm_manager_plus/android/src/main/java/dev/fluttercommunity/plus/androidalarmmanager/AlarmService.java
+++ b/packages/android_alarm_manager_plus/android/src/main/java/dev/fluttercommunity/plus/androidalarmmanager/AlarmService.java
@@ -132,7 +132,12 @@ private static void scheduleAlarm(
     alarm.putExtra("id", requestCode);
     alarm.putExtra("callbackHandle", callbackHandle);
     PendingIntent pendingIntent =
-        PendingIntent.getBroadcast(context, requestCode, alarm, PendingIntent.FLAG_UPDATE_CURRENT);
+        PendingIntent.getBroadcast(
+            context,
+            requestCode,
+            alarm,
+            (Build.VERSION >= 23 ? PendingIntent.FLAG_IMMUTABLE : 0)
+                | PendingIntent.FLAG_UPDATE_CURRENT);
 
     // Use the appropriate clock.
     int clock = AlarmManager.RTC;
@@ -216,7 +221,12 @@ public static void cancel(Context context, int requestCode) {
     // Cancel the alarm with the system alarm service.
     Intent alarm = new Intent(context, AlarmBroadcastReceiver.class);
     PendingIntent existingIntent =
-        PendingIntent.getBroadcast(context, requestCode, alarm, PendingIntent.FLAG_NO_CREATE);
+        PendingIntent.getBroadcast(
+            context,
+            requestCode,
+            alarm,
+            (Build.VERSION >= 23 ? PendingIntent.FLAG_IMMUTABLE : 0)
+                | PendingIntent.FLAG_NO_CREATE);
     if (existingIntent == null) {
       Log.i(TAG, "cancel: broadcast receiver not found");
       return;
diff --git a/packages/android_alarm_manager_plus/pubspec.yaml b/packages/android_alarm_manager_plus/pubspec.yaml
index a41af2fb91..33922d7db2 100644
--- a/packages/android_alarm_manager_plus/pubspec.yaml
+++ b/packages/android_alarm_manager_plus/pubspec.yaml
@@ -1,7 +1,7 @@
 name: android_alarm_manager_plus
 description: Flutter plugin for accessing the Android AlarmManager service, and
   running Dart code in the background when alarms fire.
-version: 1.3.0
+version: 1.3.1
 homepage: https://plus.fluttercommunity.dev/
 repository: https://github.com/fluttercommunity/plus_plugins/tree/main/packages/