diff --git a/Gemfile.lock b/Gemfile.lock
index f7e6cabbb..8bcae14c6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -93,6 +93,7 @@ GEM
       execjs
     coffee-script-source (1.9.1.1)
     columnize (0.9.0)
+    concurrent-ruby (1.1.10)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     crono (0.9.0)
@@ -162,7 +163,8 @@ GEM
     highline (1.7.8)
     hike (1.2.3)
     hirb (0.7.3)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jquery-rails (3.1.3)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)