diff --git a/ChangeLog b/ChangeLog
index 0939cac683..de22d2d621 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Jul  6 01:18:11 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* test/lib/test/unit/parallel.rb: make @@project_dir one level
+	  upper as this file had moved one level deeper.
+
 Sun Jul  5 23:54:10 2015  mizokami  <suzunatsu@yahoo.com>
 
 	* lib/optparse.rb: [DOC] Fix typo.
diff --git a/test/lib/test/unit/parallel.rb b/test/lib/test/unit/parallel.rb
index 65f8a74ca4..780deda5ae 100644
--- a/test/lib/test/unit/parallel.rb
+++ b/test/lib/test/unit/parallel.rb
@@ -183,7 +183,7 @@ if $0 == __FILE__
   module Gem # :nodoc:
   end
   class Gem::TestCase < MiniTest::Unit::TestCase # :nodoc:
-    @@project_dir = File.expand_path('../../../..', __FILE__)
+    @@project_dir = File.expand_path('../../../../..', __FILE__)
   end
 
   Test::Unit::Worker.new.run(ARGV)