diff --git a/Gemfile.lock b/Gemfile.lock
index b65e614..125880d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,6 +49,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.7.0)
+    concurrent-ruby (1.1.10)
     cucumber (1.3.15)
       builder (>= 2.1.2)
       diff-lcs (>= 1.1.3)
@@ -72,7 +73,8 @@ GEM
     gherkin (2.12.2)
       multi_json (~> 1.3)
     hike (1.2.3)
-    i18n (0.6.9)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (2.0.3)
       railties (>= 3.1.0, < 5.0)