diff --git a/Gemfile.lock b/Gemfile.lock
index 828e808..9a4b0f3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -66,6 +66,7 @@ GEM
       compass (~> 1.0.0)
       sass-rails (< 5.1)
       sprockets (< 2.13)
+    concurrent-ruby (1.1.9)
     erubis (2.7.0)
     execjs (2.2.1)
     extlib (0.9.16)
@@ -97,7 +98,8 @@ GEM
     httparty (0.14.0)
       multi_xml (>= 0.5.2)
     httpauth (0.2.1)
-    i18n (0.6.9)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jbuilder (2.1.3)
       activesupport (>= 3.0.0, < 5)
       multi_json (~> 1.2)