diff --git a/Gemfile.lock b/Gemfile.lock
index afdf5a76..1d01aac4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -106,7 +106,7 @@ GEM
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     io-console (0.6.0)
-    irb (1.9.0)
+    irb (1.9.1)
       rdoc
       reline (>= 0.3.8)
     json (2.6.3)