diff --git a/generic-ruby/Gemfile.lock b/generic-ruby/Gemfile.lock
index daa6ba9..4dd812c 100644
--- a/generic-ruby/Gemfile.lock
+++ b/generic-ruby/Gemfile.lock
@@ -8,7 +8,9 @@ GEM
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     coderay (1.1.0)
-    i18n (0.7.0)
+    concurrent-ruby (1.1.10)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.8.3)
     method_source (0.8.2)
     minitest (5.8.3)