diff --git a/script/test b/script/test
index 52dc4b92..a6ae0f4d 100755
--- a/script/test
+++ b/script/test
@@ -5,24 +5,11 @@
 #   script/test <test_file>
 
 if [ -z "$1" ]; then
-  TEST_FILES="./test/test_*.rb"
+  TEST_FILES=$(ruby -e "puts Dir.glob('test/test_*.rb')")
 else
   TEST_FILES="$@"
 fi
 
-# bundle exec gem env
-GEM_DIR=$(bundle exec gem env | grep -C 1 "GEM PATHS" | tail -1 | cut -d '-' -f2 | cut -d' ' -f2)
-RAKE_LIB_WITH_VERSION=$(bundle exec ruby -e "puts Gem::Specification.find_by_name('rake').gem_dir.split('/').last + '/lib'")
-RAKE_LIB_DIR="${GEM_DIR}/gems/${RAKE_LIB_WITH_VERSION}"
-
-test -d "${RAKE_LIB_DIR}" || {
-  echo "No ${RAKE_LIB_DIR}. Installing Rake."
-  bundle show rake | cut -d'/' -f12 | cut -d'-' -f 2 | xargs bundle exec gem install rake -v
-}
-
 set -x
 
-time bundle exec ruby -I"lib:test" \
-  -I"${RAKE_LIB_DIR}" \
-  "${RAKE_LIB_DIR}/rake/rake_test_loader.rb" \
-  $TEST_FILES
+time bundle exec ruby -I"lib:test" -rloader $TEST_FILES
diff --git a/test/loader.rb b/test/loader.rb
new file mode 100644
index 00000000..f2c9c0d1
--- /dev/null
+++ b/test/loader.rb
@@ -0,0 +1,44 @@
+# Yoinked lovingly from Rake's source code.
+#
+# Copyright (c) Jim Weirich
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+require 'rake'
+
+# Load the test files from the command line.
+argv = ARGV.select do |argument|
+  case argument
+  when /^-/ then
+    argument
+  when /\*/ then
+    FileList[argument].to_a.each do |file|
+      require File.expand_path file
+    end
+
+    false
+  else
+    require File.expand_path argument
+
+    false
+  end
+end
+
+ARGV.replace argv