diff --git a/config/puma.rb b/config/puma.rb
index 325436648..0aa72dba9 100644
--- a/config/puma.rb
+++ b/config/puma.rb
@@ -7,3 +7,9 @@
 rackup      DefaultRackup if defined?(DefaultRackup)
 port        ENV['PORT']     || 3000
 environment ENV['RACK_ENV'] || 'development'
+
+on_worker_boot do
+  # Worker-specific setup for Rails 4.1 to 5.2, after 5.2 it's not needed
+  # See: https://devcenter.heroku.com/articles/deploying-rails-applications-with-the-puma-web-server#on-worker-boot
+  ActiveRecord::Base.establish_connection
+end