diff --git a/Gemfile.lock b/Gemfile.lock
index 2b368c4..eff3f6a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,11 +39,13 @@ GEM
       tzinfo (~> 1.1)
     arel (5.0.1.20140414130214)
     builder (3.2.2)
+    concurrent-ruby (1.1.10)
     erubis (2.7.0)
     haml (4.0.5)
       tilt
     hike (1.2.3)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jquery-rails (3.1.2)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)