diff --git a/database/migrations/add_type_column_to_invoices_table.php.stub b/database/migrations/add_type_column_to_invoices_table.php.stub
index 220181b..1c436c8 100644
--- a/database/migrations/add_type_column_to_invoices_table.php.stub
+++ b/database/migrations/add_type_column_to_invoices_table.php.stub
@@ -12,7 +12,7 @@ return new class extends Migration
     public function up(): void
     {
         Schema::table('invoices', function (Blueprint $table) {
-            $table->string('type')->default('invoice');
+            $table->string('type')->default('invoice')->index();
             $table->foreignId('parent_id')->nullable();
         });
     }
diff --git a/database/migrations/create_invoices_table.php.stub b/database/migrations/create_invoices_table.php.stub
index f1b46d9..ea886af 100644
--- a/database/migrations/create_invoices_table.php.stub
+++ b/database/migrations/create_invoices_table.php.stub
@@ -26,7 +26,7 @@ return new class extends Migration
             **/
             $table->binary('logo')->nullable(); 
 
-            $table->string('state');
+            $table->string('state')->index();
             $table->dateTime('state_set_at')->nullable();
 
             $table->dateTime('due_at')->nullable();