diff --git a/Gemfile.lock b/Gemfile.lock
index 76d4dfb..4adb3de 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,6 +56,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.8.0)
+    concurrent-ruby (1.1.10)
     daemons (1.1.9)
     database_cleaner (1.3.0)
     devise (3.4.1)
@@ -82,7 +83,8 @@ GEM
     hashie (3.3.2)
     hike (1.2.3)
     httpclient (2.6.0.1)
-    i18n (0.6.11)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jbuilder (2.2.5)
       activesupport (>= 3.0.0, < 5)
       multi_json (~> 1.2)