diff --git a/util/bisect b/util/bisect
index 8d350e3dcc15..e59083318ea1 100755
--- a/util/bisect
+++ b/util/bisect
@@ -7,25 +7,4 @@ rescue Gem::GemNotFoundException
   abort "Install minitest-bisect gem to run a rubygems test suite bisection"
 end
 
-#
-# Need to monkeypatch the `path_expander` gem to make sure it uses the same
-# sorted set of files as `rake`. Otherwise `rake test` failures are
-# irreproducible. Can be removed once
-# https://github.com/seattlerb/path_expander/pull/4 is released.
-#
-
-module RefinedPathExpander
-  def expand_dirs_to_files(*dirs)
-    super.sort
-  end
-end
-
-require 'path_expander'
-
-class PathExpander
-
-  prepend RefinedPathExpander
-
-end
-
 load minitest_bisect