diff --git a/test/minitest/retry_test.rb b/test/minitest/retry_test.rb
index 81cef7e..7b3b1f0 100644
--- a/test/minitest/retry_test.rb
+++ b/test/minitest/retry_test.rb
@@ -47,10 +47,12 @@ def fail
       end
       Minitest::Runnable.run_one_method(retry_test, :fail, self.reporter)
     end
+
+    path = Gem::Version.new(Minitest::VERSION) >= Gem::Version.new("5.21.0") ? "test/minitest/retry_test.rb" : __FILE__
     expect = <<-EOS
-[MinitestRetry] retry 'fail' count: 1,  msg: RuntimeError: parsing error\n    #{__FILE__}:45:in `fail'
-[MinitestRetry] retry 'fail' count: 2,  msg: RuntimeError: parsing error\n    #{__FILE__}:45:in `fail'
-[MinitestRetry] retry 'fail' count: 3,  msg: RuntimeError: parsing error\n    #{__FILE__}:45:in `fail'
+[MinitestRetry] retry 'fail' count: 1,  msg: RuntimeError: parsing error\n    #{path}:45:in `fail'
+[MinitestRetry] retry 'fail' count: 2,  msg: RuntimeError: parsing error\n    #{path}:45:in `fail'
+[MinitestRetry] retry 'fail' count: 3,  msg: RuntimeError: parsing error\n    #{path}:45:in `fail'
     EOS
 
     refute reporter.passed?