diff --git a/db/post_migrate/20241023041126_clear_duplicate_admin_notices.rb b/db/post_migrate/20241023041126_clear_duplicate_admin_notices.rb
new file mode 100644
index 00000000000..670259d232f
--- /dev/null
+++ b/db/post_migrate/20241023041126_clear_duplicate_admin_notices.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+class ClearDuplicateAdminNotices < ActiveRecord::Migration[7.1]
+  def up
+    problem_subject_id = 0
+
+    DB.exec(<<~SQL)
+      DELETE FROM admin_notices
+      WHERE subject = #{problem_subject_id}
+    SQL
+  end
+end