diff --git a/app/models/gobi/isbn_report_job.rb b/app/models/gobi/isbn_report_job.rb
index 286a57f2..2e91e7c6 100644
--- a/app/models/gobi/isbn_report_job.rb
+++ b/app/models/gobi/isbn_report_job.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+require 'csv'
 
 module Gobi
   class IsbnReportJob < LibJob