diff --git a/lib/tasks/static_all.rake b/lib/tasks/static_all.rake
index 01ecffcff..6deec5da1 100644
--- a/lib/tasks/static_all.rake
+++ b/lib/tasks/static_all.rake
@@ -4,7 +4,7 @@ namespace :static_all do
   task :repo => :environment do
     school_alls = School.includes(:courses, user_extensions: :user).all
     school_alls.find_in_batches(batch_size: 50) do |schools|
-      Parallel.each_with_index(schools, in_processes: 5) do |school, index|
+      Parallel.each(schools, in_processes: 5) do |school|
         puts("school_id: #{school.id}")
         data = Schools::SchoolStatisticService.new(school)
         sta_all = StaAll.find_or_initialize_by(school_id: school.id)