diff --git a/lib/tasks/legislation_proposals.rake b/lib/tasks/legislation_proposals.rake
new file mode 100644
index 000000000..ad2b7729e
--- /dev/null
+++ b/lib/tasks/legislation_proposals.rake
@@ -0,0 +1,10 @@
+namespace :legislation_proposals do
+  desc "Calculate cached votes score for existing legislation proposals"
+  task calculate_cached_votes_score: :environment do
+    Legislation::Proposal.find_each do |p|
+      p.update_column(:cached_votes_score, p.cached_votes_up - p.cached_votes_down)
+      print "."
+    end
+    puts "\nTask finished 🎉"
+  end
+end