diff --git a/Gemfile.lock b/Gemfile.lock
index 5a5a4d7..4ced581 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -133,7 +133,7 @@ GEM
       polyglot (>= 0.3.1)
     turn (0.8.2)
       ansi (>= 1.2.2)
-    tzinfo (0.3.31)
+    tzinfo (0.3.61)
     uglifier (1.2.3)
       execjs (>= 0.3.0)
       multi_json (>= 1.0.2)