diff --git a/Gemfile.lock b/Gemfile.lock
index e597316..d977d23 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -47,6 +47,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.6.3)
+    concurrent-ruby (1.1.9)
     daemon_controller (1.1.5)
     devise (2.2.7)
       bcrypt-ruby (~> 3.0)
@@ -60,7 +61,8 @@ GEM
     execjs (2.0.2)
     gravtastic (3.2.6)
     hike (1.2.3)
-    i18n (0.6.5)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (3.0.4)
       railties (>= 3.0, < 5.0)