diff --git a/spec/fabricators/customer_fabricator.rb b/spec/fabricators/customer_fabricator.rb
index 1efdfad..329af38 100644
--- a/spec/fabricators/customer_fabricator.rb
+++ b/spec/fabricators/customer_fabricator.rb
@@ -1,2 +1,3 @@
+# frozen_string_literal: true
 
 Fabricator(:customer, from: "DiscoursePatrons::Customer")