diff --git a/test/scrubbers_test.rb b/test/scrubbers_test.rb
index 8db2d85..f316854 100644
--- a/test/scrubbers_test.rb
+++ b/test/scrubbers_test.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require "benchmark"
 require "minitest/autorun"
 require "rails-html-sanitizer"