diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c552ecc..177bb23 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -6,6 +6,8 @@ on:
       - master
   pull_request:
     types: [opened, synchronize, reopened]
+  schedule:
+    - cron:  '0 0 * * 1'
 
 jobs:
   lint:
diff --git a/Rakefile b/Rakefile
index c4c8b98..688df8c 100755
--- a/Rakefile
+++ b/Rakefile
@@ -52,7 +52,10 @@ task :create_zip_code_data do
     prefectures_to_zip[code] << [r0, r1]
   end
 
+  # rubocop:disable Style/HashConversion
+  # https://github.com/rubocop-hq/rubocop/issues/9526
   prefectures_to_zip = Hash[*prefectures_to_zip.sort.flatten(1)]
+  # rubocop:enable Style/HashConversion
 
   # save result
   File.open('data/zip.yml', 'w') do |file|
diff --git a/lib/jp_prefecture/zip_mapping.rb b/lib/jp_prefecture/zip_mapping.rb
index 14521ac..1d44be2 100644
--- a/lib/jp_prefecture/zip_mapping.rb
+++ b/lib/jp_prefecture/zip_mapping.rb
@@ -7,7 +7,10 @@ module JpPrefecture
   module ZipMapping
     filepath = File.join(File.dirname(__FILE__), '../../data/zip.yml')
     @data = YAML.load_file(filepath)
+    # rubocop:disable Style/HashConversion
+    # https://github.com/rubocop-hq/rubocop/issues/9526
     @data = Hash[*@data.collect { |code, arr| [code, arr.collect { |zip_from, zip_to| zip_from..zip_to }] }.flatten(1)]
+    # rubocop:enable Style/HashConversion
 
     def self.data
       JpPrefecture.config.zip_mapping_data || @data