diff --git a/Gemfile.lock b/Gemfile.lock
index 5806cfc..c8870f4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,7 +56,8 @@ GEM
     erubis (2.7.0)
     foreman (0.82.0)
       thor (~> 0.19.1)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jmespath (1.3.1)
     loofah (2.0.3)
       nokogiri (>= 1.5.9)