diff --git a/Gemfile.lock b/Gemfile.lock
index cc98ba1..6acd97b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,10 +17,12 @@ GEM
       net-sftp (>= 2.0.0)
       net-ssh (>= 2.0.14)
       net-ssh-gateway (>= 1.1.0)
+    concurrent-ruby (1.1.5)
     ghi (0.3.1)
     git (1.2.5)
     highline (1.6.11)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jeweler (1.6.4)
       bundler (~> 1.0)
       git (>= 1.2.5)