diff --git a/Gemfile.lock b/Gemfile.lock
index 78e600b..7b227d7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -128,7 +128,7 @@ GEM
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     io-console (0.6.0)
-    irb (1.8.3)
+    irb (1.9.0)
       rdoc
       reline (>= 0.3.8)
     jbuilder (2.11.5)