diff --git a/lib/rake/rake_test_loader.rb b/lib/rake/rake_test_loader.rb
index 15ffbd2e6..af4a182a3 100644
--- a/lib/rake/rake_test_loader.rb
+++ b/lib/rake/rake_test_loader.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "rake/file_list"
+
 # Load the test files from the command line.
 argv = ARGV.select do |argument|
   case argument