diff --git a/cruise_config.rb b/cruise_config.rb
index a5efcd3d7..04b5bb284 100644
--- a/cruise_config.rb
+++ b/cruise_config.rb
@@ -2,4 +2,5 @@ require 'fileutils'
 
 Project.configure do |project|
   project.build_command = './ci.sh'
+  project.do_clean_checkout :always
 end