diff --git a/extend-rails/Gemfile.lock b/extend-rails/Gemfile.lock
index 87881c7..9cd2382 100644
--- a/extend-rails/Gemfile.lock
+++ b/extend-rails/Gemfile.lock
@@ -208,7 +208,7 @@ GEM
     turbolinks (5.1.1)
       turbolinks-source (~> 5.1)
     turbolinks-source (5.1.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (4.1.18)
       execjs (>= 0.3.0, < 3)