diff --git a/app/Gemfile.lock b/app/Gemfile.lock
index a00f229..9e02170 100644
--- a/app/Gemfile.lock
+++ b/app/Gemfile.lock
@@ -167,7 +167,7 @@ GEM
     turbolinks (5.1.0)
       turbolinks-source (~> 5.1)
     turbolinks-source (5.1.0)
-    tzinfo (1.2.4)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (4.1.3)
       execjs (>= 0.3.0, < 3)