diff --git a/Gemfile.lock b/Gemfile.lock
index 953e702..946e830 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -32,6 +32,7 @@ GEM
     arel (3.0.2)
     builder (3.0.0)
     columnize (0.3.6)
+    concurrent-ruby (1.1.5)
     debugger (1.2.0)
       columnize (>= 0.3.1)
       debugger-linecache (~> 1.1.1)
@@ -43,7 +44,8 @@ GEM
     execjs (1.4.0)
       multi_json (~> 1.0)
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (2.0.2)
       railties (>= 3.2.0, < 5.0)