diff --git a/Gemfile.lock b/Gemfile.lock
index 4a05904..b7c4ba1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -47,6 +47,7 @@ GEM
     childprocess (0.3.1)
       ffi (~> 1.0.6)
     coderay (0.9.5)
+    concurrent-ruby (1.1.10)
     cucumber (1.1.9)
       builder (>= 2.1.2)
       diff-lcs (>= 1.1.2)
@@ -83,7 +84,8 @@ GEM
     hoe (1.5.3)
       rake (>= 0.8.1)
       rubyforge (>= 1.0.0)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.6.5)
     json_pure (1.6.5)
     livereload (1.6.1)