diff --git a/Gemfile.lock b/Gemfile.lock
index 939a185f2..c4eb406e8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -77,6 +77,7 @@ GEM
       execjs
     coffee-script-source (1.9.1.1)
     columnize (0.9.0)
+    concurrent-ruby (1.1.10)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
     crono (0.9.0)
@@ -118,7 +119,8 @@ GEM
     hashie (3.4.2)
     hike (1.2.3)
     hirb (0.7.3)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jquery-rails (4.0.4)
       rails-dom-testing (~> 1.0)
       railties (>= 4.2.0)