diff --git a/Gemfile.lock b/Gemfile.lock
index e5d8c48..6fd65d1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,6 +69,7 @@ GEM
       celluloid (~> 0.11.0)
       nio4r (>= 0.4.0)
     coderay (1.0.7)
+    concurrent-ruby (1.1.10)
     connection_pool (0.9.2)
     countdownlatch (1.0.0)
     deep_merge (1.0.0)
@@ -78,7 +79,8 @@ GEM
     girl_friday (0.10.0)
       connection_pool (~> 0.9.0)
     has-guarded-handlers (1.3.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.7.4)
     little-plugger (1.1.3)
     logging (1.7.2)