diff --git a/ruby-app/Gemfile.lock b/ruby-app/Gemfile.lock
index 283510f..b7f07c7 100644
--- a/ruby-app/Gemfile.lock
+++ b/ruby-app/Gemfile.lock
@@ -194,7 +194,7 @@ GEM
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (4.1.20)
       execjs (>= 0.3.0, < 3)