diff --git a/Gemfile.lock b/Gemfile.lock
index 0b201ea..7f353f3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -78,7 +78,8 @@ GEM
       rack-accept
       virtus (>= 1.0.0)
     hashie (3.4.4)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     ice_nine (0.11.2)
     jbuilder (2.5.0)
       activesupport (>= 3.0.0, < 5.1)