diff --git a/lib/tasks/ci.rake b/lib/tasks/ci.rake
index 9bcfb502b..b591994ce 100644
--- a/lib/tasks/ci.rake
+++ b/lib/tasks/ci.rake
@@ -13,6 +13,7 @@ namespace :ci do
   desc "Setup Redmine for a new build."
   task :setup do
     Rake::Task["ci:dump_environment"].invoke
+    Rake::Task["tmp:clear"].invoke
     Rake::Task["db:create"].invoke
     Rake::Task["db:migrate"].invoke
     Rake::Task["db:schema:dump"].invoke