diff --git a/lib/tasks/regenerate_ballot_lines_cache.rake b/lib/tasks/regenerate_ballot_lines_cache.rake
new file mode 100644
index 000000000..d008ec556
--- /dev/null
+++ b/lib/tasks/regenerate_ballot_lines_cache.rake
@@ -0,0 +1,8 @@
+namespace :budgets do
+  desc "Regenerate ballot_lines_count cache"
+  task calculate_ballot_lines: :environment do
+    Budget::Ballot.find_each do |ballot|
+      Budget::Ballot.reset_counters ballot.id, :lines
+    end
+  end
+end