diff --git a/backend/db/migrate/20260713000000_create_post_url_sanitisation_rules.rb b/backend/db/migrate/20260713000000_create_post_url_sanitisation_rules.rb
index f6a63d5..77a2b0b 100644
--- a/backend/db/migrate/20260713000000_create_post_url_sanitisation_rules.rb
+++ b/backend/db/migrate/20260713000000_create_post_url_sanitisation_rules.rb
@@ -1,44 +1,58 @@
 class CreatePostUrlSanitisationRules < ActiveRecord::Migration[8.0]
+  class PostUrlSanitisationRule < ActiveRecord::Base
+    self.table_name = 'post_url_sanitisation_rules'
+  end
+
   def up
-    create_table :post_url_sanitisation_rules,
-                 id: :integer,
-                 primary_key: :priority do |t|
+    create_table :post_url_sanitisation_rules, id: :integer, primary_key: :priority do |t|
       t.string :source_pattern, null: false
       t.string :replacement, null: false
       t.timestamps
       t.datetime :discarded_at
+
       t.index :source_pattern, unique: true
       t.index :discarded_at
     end
 
-    now = ActiveRecord::Base.connection.quote(Time.current)
-    execute <<~SQL
-      INSERT INTO
-        post_url_sanitisation_rules(priority, source_pattern, replacement, created_at, updated_at)
-      VALUES
-        (10, '\\Ahttps?://youtu\\\\.be/([^/?#]+)(?:[?#].*)?\\z',
-             'https://www.youtube.com/watch?v=\\\\1',
-             #{ now }, #{ now })
-      , (20, '\\Ahttps?://(?:www\\\\.|m\\\\.)?youtube\\\\.com/live/([^/?#]+)(?:[?#].*)?\\z',
-             'https://www.youtube.com/watch?v=\\\\1',
-             #{ now }, #{ now })
-      , (30, '\\Ahttps?://(?:www\\\\.|m\\\\.)?youtube\\\\.com/shorts/([^/?#]+)(?:[?#].*)?\\z',
-             'https://www.youtube.com/watch?v=\\\\1',
-             #{ now }, #{ now })
-      , (40, '\\Ahttps?://(?:www\\\\.|m\\\\.)?youtube\\\\.com/embed/([^/?#]+)(?:[?#].*)?\\z',
-             'https://www.youtube.com/watch?v=\\\\1',
-             #{ now }, #{ now })
-      , (50, '\\Ahttps?://(?:www\\\\.|m\\\\.)?youtube\\\\.com/watch\\\\?(?:[^#&]+&)*v=([^&#]+)(?:[&#].*)?\\z',
-             'https://www.youtube.com/watch?v=\\\\1',
-             #{ now }, #{ now })
-      , (60, '\\Ahttps?://nico\\\\.ms/([^/?#]+)(?:[?#].*)?\\z',
-             'https://www.nicovideo.jp/watch/\\\\1',
-             #{ now }, #{ now })
-      , (70, '\\Ahttps?://(?:www\\\\.)?nicovideo\\\\.jp/watch/([^?#/]+)(?:[?#].*)?\\z',
-             'https://www.nicovideo.jp/watch/\\\\1',
-             #{ now }, #{ now })
-      ;
-    SQL
+    now = Time.current
+
+    PostUrlSanitisationRule.insert_all!([
+        { priority: 10,
+          source_pattern: '\Ahttps?://youtu\.be/([^/?#]+)(?:[?#].*)?\z',
+          replacement: 'https://www.youtube.com/watch?v=\1',
+          created_at: now,
+          updated_at: now },
+        { priority: 20,
+          source_pattern: '\Ahttps?://(?:www\.|m\.)?youtube\.com/live/([^/?#]+)(?:[?#].*)?\z',
+          replacement: 'https://www.youtube.com/watch?v=\1',
+          created_at: now,
+          updated_at: now },
+        { priority: 30,
+          source_pattern: '\Ahttps?://(?:www\.|m\.)?youtube\.com/shorts/([^/?#]+)(?:[?#].*)?\z',
+          replacement: 'https://www.youtube.com/watch?v=\1',
+          created_at: now,
+          updated_at: now },
+        { priority: 40,
+          source_pattern: '\Ahttps?://(?:www\.|m\.)?youtube\.com/embed/([^/?#]+)(?:[?#].*)?\z',
+          replacement: 'https://www.youtube.com/watch?v=\1',
+          created_at: now,
+          updated_at: now },
+        { priority: 50,
+          source_pattern:
+              '\Ahttps?://(?:www\.|m\.)?youtube\.com/watch\?(?:[^#&]+&)*v=([^&#]+)(?:[&#].*)?\z',
+          replacement: 'https://www.youtube.com/watch?v=\1',
+          created_at: now,
+          updated_at: now },
+        { priority: 60,
+          source_pattern: '\Ahttps?://nico\.ms/([^/?#]+)(?:[?#].*)?\z',
+          replacement: 'https://www.nicovideo.jp/watch/\1',
+          created_at: now,
+          updated_at: now },
+        { priority: 70,
+          source_pattern: '\Ahttps?://(?:www\.)?nicovideo\.jp/watch/([^?#/]+)(?:[?#].*)?\z',
+          replacement: 'https://www.nicovideo.jp/watch/\1',
+          created_at: now,
+          updated_at: now }])
   end
 
   def down