diff --git a/Gemfile.lock b/Gemfile.lock
index fbe07a9..19f86a6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -54,6 +54,7 @@ GEM
       execjs
     coffee-script-source (1.10.0)
     columnize (0.9.0)
+    concurrent-ruby (1.1.10)
     debugger (1.6.3)
       columnize (>= 0.3.1)
       debugger-linecache (~> 1.2.0)
@@ -64,7 +65,8 @@ GEM
     execjs (2.6.0)
     hashery (2.1.1)
     hike (1.2.3)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (3.0.4)
       railties (>= 3.0, < 5.0)