diff --git a/Gemfile.lock b/Gemfile.lock
index bf4c6c1..606326f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,11 +52,13 @@ GEM
       sass (~> 3.1)
     compass-rails (1.1.3)
       compass (>= 0.12.2)
+    concurrent-ruby (1.1.5)
     erubis (2.7.0)
     execjs (2.0.2)
     fssm (0.2.10)
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (2.0.2)
       railties (>= 3.2.0, < 5.0)