diff --git a/Gemfile.lock b/Gemfile.lock
index e29a0de..22aaa5c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,6 +26,7 @@ GEM
     addressable (2.3.6)
     builder (3.2.2)
     coderay (1.1.0)
+    concurrent-ruby (1.1.9)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
     erubis (2.7.0)
@@ -33,7 +34,8 @@ GEM
       multipart-post (>= 1.2, < 3)
     faraday_middleware (0.9.2)
       faraday (>= 0.7.4, < 0.10)
-    i18n (0.6.9)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.8.1)
     metaclass (0.0.4)
     method_source (0.8.2)