diff --git a/Gemfile.lock b/Gemfile.lock
index 0d12beb..8e306dd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,13 +36,15 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.8.0)
+    concurrent-ruby (1.1.10)
     erubis (2.7.0)
     execjs (2.2.2)
     hike (1.2.3)
     httparty (0.13.3)
       json (~> 1.8)
       multi_xml (>= 0.5.2)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jbuilder (2.2.6)
       activesupport (>= 3.0.0, < 5)
       multi_json (~> 1.2)