diff --git a/test/fixtures/config/initializers.rb b/test/fixtures/config/initializers.rb
index 909a04e..539e552 100644
--- a/test/fixtures/config/initializers.rb
+++ b/test/fixtures/config/initializers.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 Bridgetown.configure do
   init :"bridgetown-lit-renderer"
 end