diff --git a/Gemfile b/Gemfile
index b664db2f..c446e0fc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -19,4 +19,5 @@ group :development do
   gem "minitest"
   gem 'guard' # NOTE: this is necessary in newer versions
   gem 'guard-minitest'
+  gem "rb-readline"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 7bf62458..4e4c7f2d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -88,6 +88,7 @@ GEM
     rb-fsevent (0.9.8)
     rb-inotify (0.9.7)
       ffi (>= 0.5.0)
+    rb-readline (0.5.3)
     ruby_dep (1.5.0)
     rye (0.9.13)
       annoy
@@ -120,6 +121,7 @@ DEPENDENCIES
   guard-minitest
   minitest
   rake
+  rb-readline
   rye
   salama!
   salama-arm!