diff --git a/test/helper.rb b/test/helper.rb
index a38d752..e93f118 100644
--- a/test/helper.rb
+++ b/test/helper.rb
@@ -9,11 +9,6 @@
 
 require 'json'
 
-if ActiveSupport::TestCase.respond_to?(:test_order=)
-  # TODO: remove check once ActiveSupport dependency is at least 4.2
-  ActiveSupport::TestCase.test_order = :random
-end
-
 GlobalID.app = 'bcx'
 
 # Default serializers is Marshal, whose format changed 1.9 -> 2.0,