diff --git a/ci/ci_build.rb b/ci/ci_build.rb
index e5c632bd01..0ee952c00b 100755
--- a/ci/ci_build.rb
+++ b/ci/ci_build.rb
@@ -20,7 +20,7 @@
   puts
   puts "[CruiseControl] Bundling RubyGems"
   puts
-  build_results[:bundle] = system 'rm -rf vendor && gem --debug bundle'
+  build_results[:bundle] = system 'rm -rf vendor && gem bundle --update'
 end
 
 cd "#{root_dir}/activesupport" do