diff --git a/Gemfile b/Gemfile
index bf85b7c..1098319 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,6 +2,7 @@
 source "https://rubygems.org"
 
 gem "pry"
+gem "rb-readline"
 gem "thor"
 gem "colorize"
 gem "rspec"