diff --git a/Gemfile.lock b/Gemfile.lock
index c03650ce..be29481c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -92,6 +92,7 @@ GEM
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
     coderay (1.1.0)
+    concurrent-ruby (1.1.10)
     cucumber (1.3.20)
       builder (>= 2.1.2)
       diff-lcs (>= 1.1.3)
@@ -142,7 +143,8 @@ GEM
       haml (~> 4.0.0)
       nokogiri (~> 1.6.0)
       ruby_parser (~> 3.5)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jquery-datatables-rails (3.3.0)
       actionpack (>= 3.1)
       jquery-rails