diff --git a/Gemfile.lock b/Gemfile.lock
index b7b9630..e8580b1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,6 +49,7 @@ GEM
       mongoid (>= 3.0, < 5.0)
       mongoid-grid_fs (>= 1.3, < 3.0)
     coderay (1.1.0)
+    concurrent-ruby (1.1.10)
     decent_exposure (2.3.2)
     diff-lcs (1.2.5)
     erubis (2.7.0)
@@ -71,7 +72,8 @@ GEM
       guard (~> 2.1)
       guard-compat (~> 1.1)
       rspec (>= 2.99.0, < 4.0)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.8.3)
     listen (3.0.2)
       rb-fsevent (>= 0.9.3)