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-rw-r--r--test/psych/helper.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/psych/helper.rb b/test/psych/helper.rb
index f5800303fd..0aae69971e 100644
--- a/test/psych/helper.rb
+++ b/test/psych/helper.rb
@@ -3,6 +3,7 @@ require 'stringio'
require 'tempfile'
require 'date'
require 'psych'
+require_relative '../ruby/envutil'
module Psych
class TestCase < MiniTest::Unit::TestCase