diff --git a/database/migrations/2023_04_06_122125_add_message_type.php b/database/migrations/2023_04_06_122125_add_message_type.php
index dd9bd38..a191e80 100644
--- a/database/migrations/2023_04_06_122125_add_message_type.php
+++ b/database/migrations/2023_04_06_122125_add_message_type.php
@@ -2,6 +2,7 @@
 
 use Illuminate\Database\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Schema;
 
 class AddMessageType extends Migration
@@ -19,6 +20,12 @@ class AddMessageType extends Migration
                 ->comment('Message Type defined by an enum.')
                 ->after('message');
         });
+        // Set all existing messages as public.
+        $messages = DB::table('messages')->get();
+        collect($messages)->map(function (object $message) {
+            DB::table('messages')->where('id', $message->id)
+                ->update(['type' => 2]);
+        });
     }
 
     /**