diff --git a/Gemfile.lock b/Gemfile.lock
index d097852..47b7280 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -217,7 +217,7 @@ GEM
       polyglot (>= 0.3.1)
     turn (0.9.6)
       ansi
-    tzinfo (0.3.37)
+    tzinfo (0.3.61)
     uglifier (2.1.1)
       execjs (>= 0.3.0)
       multi_json (~> 1.0, >= 1.0.2)