diff --git a/ruby/apache_logs/Gemfile.lock b/ruby/apache_logs/Gemfile.lock
index 04a794d..e4ae017 100644
--- a/ruby/apache_logs/Gemfile.lock
+++ b/ruby/apache_logs/Gemfile.lock
@@ -20,7 +20,8 @@ GEM
     coderay (1.1.1)
     concurrent-ruby (1.0.2)
     debug_inspector (0.0.2)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     method_source (0.8.2)
     minitest (5.9.0)
     pry (0.10.4)