diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 164dbc9..1971faa 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -70,6 +70,10 @@
    presses home. -->
   <uses-permission android:name="android.permission.STOP_APP_SWITCHES"/>
 
+  <!-- Used for sending PendingIntents to dynamically registered receivers -->
+  <uses-permission android:name="com.android.dialer.permission.DIALER_ORIGIN"
+    android:protectionLevel="signature" />
+
   <!-- Permissions needed for badger count showing on launch icon. -->
 
   <!--for Samsung-->
diff --git a/java/com/android/voicemail/impl/sms/StatusSmsFetcher.java b/java/com/android/voicemail/impl/sms/StatusSmsFetcher.java
index 73e0c7f..623916c 100644
--- a/java/com/android/voicemail/impl/sms/StatusSmsFetcher.java
+++ b/java/com/android/voicemail/impl/sms/StatusSmsFetcher.java
@@ -54,8 +54,12 @@
 
   private static final long STATUS_SMS_TIMEOUT_MILLIS = 60_000;
 
+  private static final String PERMISSION_DIALER_ORIGIN =
+    "com.android.dialer.permission.DIALER_ORIGIN";
+
   private static final String ACTION_REQUEST_SENT_INTENT =
       "com.android.voicemailomtp.sms.REQUEST_SENT";
+
   private static final int ACTION_REQUEST_SENT_REQUEST_CODE = 0;
 
   private CompletableFuture<Bundle> future = new CompletableFuture<>();
@@ -68,7 +72,7 @@
     this.phoneAccountHandle = phoneAccountHandle;
     IntentFilter filter = new IntentFilter(ACTION_REQUEST_SENT_INTENT);
     filter.addAction(OmtpService.ACTION_SMS_RECEIVED);
-    context.registerReceiver(this, filter);
+    context.registerReceiver(this, filter, PERMISSION_DIALER_ORIGIN, /* scheduler= */ null);
   }
 
   @Override
@@ -90,7 +94,10 @@
     // Because the receiver is registered dynamically, implicit intent must be used.
     // There should only be a single status SMS request at a time.
     return PendingIntent.getBroadcast(
-        context, ACTION_REQUEST_SENT_REQUEST_CODE, intent, PendingIntent.FLAG_CANCEL_CURRENT);
+        context,
+        ACTION_REQUEST_SENT_REQUEST_CODE,
+        intent,
+        PendingIntent.FLAG_CANCEL_CURRENT | PendingIntent.FLAG_IMMUTABLE);
   }
 
   @Override