diff --git a/lib/irb/color_printer.rb b/lib/irb/color_printer.rb
index 3667ef16fe..11885f465d 100644
--- a/lib/irb/color_printer.rb
+++ b/lib/irb/color_printer.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 require 'pp'
+require 'irb/color'
 
 module IRB
   class ColorPrinter < ::PP