diff --git a/fizz_buzz_on_rails/Gemfile.lock b/fizz_buzz_on_rails/Gemfile.lock
index 99bc87f..51618fd 100644
--- a/fizz_buzz_on_rails/Gemfile.lock
+++ b/fizz_buzz_on_rails/Gemfile.lock
@@ -190,7 +190,7 @@ GEM
     turbolinks (5.2.1)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
-    tzinfo (1.2.7)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     web-console (4.0.3)
       actionview (>= 6.0.0)