diff --git a/refume/Gemfile.lock b/refume/Gemfile.lock
index b8fe578..6c4842c 100644
--- a/refume/Gemfile.lock
+++ b/refume/Gemfile.lock
@@ -182,7 +182,7 @@ GEM
     turbolinks (5.2.1)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
-    tzinfo (1.2.6)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)