diff --git a/ruby/lib/ci/queue.rb b/ruby/lib/ci/queue.rb
index f849a660..694294dc 100644
--- a/ruby/lib/ci/queue.rb
+++ b/ruby/lib/ci/queue.rb
@@ -29,6 +29,8 @@ def requeueable?(test_result)
     end
 
     def shuffle(tests, random)
+      puts "[Shuffler] #{shuffler.inspect}"
+      puts "[Tests] #{tests.first.inspect}"
       if shuffler
         shuffler.call(tests, random)
       else