diff --git a/spec/features/admin/configuration/tax_rates_spec.rb b/spec/features/admin/configuration/tax_rates_spec.rb
index db841096ca..52fc00eef8 100644
--- a/spec/features/admin/configuration/tax_rates_spec.rb
+++ b/spec/features/admin/configuration/tax_rates_spec.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'spec_helper'
 
 describe "Tax Rates" do