diff --git a/Gemfile.lock b/Gemfile.lock
index fc55551..0a5306f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -40,10 +40,12 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.8.0)
+    concurrent-ruby (1.2.0)
     erubis (2.7.0)
     execjs (2.2.2)
     hike (1.2.3)
-    i18n (0.6.11)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (3.1.2)
       railties (>= 3.0, < 5.0)