diff --git a/Gemfile.lock b/Gemfile.lock
index fdcb997..1e4c701 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -70,6 +70,7 @@ GEM
       execjs
     coffee-script-source (1.9.1)
     columnize (0.9.0)
+    concurrent-ruby (1.1.10)
     database_cleaner (1.3.0)
     debug_inspector (0.0.2)
     debugger-linecache (1.2.0)
@@ -115,7 +116,8 @@ GEM
     hashie (3.4.0)
     hike (1.2.3)
     hitimes (1.2.2)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     ice_nine (0.11.1)
     jbuilder (2.2.7)
       activesupport (>= 3.0.0, < 5)