diff --git a/Gemfile.lock b/Gemfile.lock
index c42adbf..ab7938a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,6 +56,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.4.0)
+    concurrent-ruby (1.1.5)
     cucumber (1.2.1)
       builder (>= 2.1.2)
       diff-lcs (>= 1.1.3)
@@ -93,7 +94,8 @@ GEM
       guard (>= 1.1)
       spork (>= 0.8.4)
     hike (1.2.1)
-    i18n (0.6.1)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (2.1.4)
       railties (>= 3.0, < 5.0)