diff --git a/test/test_require.rb b/test/test_require.rb
index 59db45f05..f002223f1 100644
--- a/test/test_require.rb
+++ b/test/test_require.rb
@@ -9,7 +9,7 @@ class TestRequire < Minitest::Test
     next if File.basename(fn) == "version.rb"
 
     define_method "test_require_individual_library_files: #{fn}" do
-      system "ruby", fn
+      system "bundle", "exec", "ruby", fn
       assert $?.success?, "Failed to load #{fn.inspect}"
     end
   end