diff --git a/Gemfile.lock b/Gemfile.lock
index 2e993f8..45fe2c4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
       reline
     i18n (1.15.2)
       concurrent-ruby (~> 1.0)
-    io-console (0.9.2)
+    io-console (0.9.4)
     json (2.21.2)
     logger (1.7.0)
     minitest (6.0.6)