diff --git a/Gemfile.lock b/Gemfile.lock
index 83be720..a5c5c8c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -296,7 +296,7 @@ GEM
     turn (0.9.7)
       ansi
       minitest (~> 4)
-    tzinfo (0.3.45)
+    tzinfo (0.3.61)
     uglifier (2.7.2)
       execjs (>= 0.3.0)
       json (>= 1.8.0)