diff --git a/Gemfile.lock b/Gemfile.lock
index f971967..5192ccd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -152,7 +152,7 @@ GEM
       polyglot (>= 0.3.1)
     turbolinks (2.2.2)
       coffee-rails
-    tzinfo (0.3.39)
+    tzinfo (0.3.61)
     uglifier (2.5.0)
       execjs (>= 0.3.0)
       json (>= 1.8.0)