diff --git a/Gemfile.lock b/Gemfile.lock
index f34f7ac5a..576f91c3a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -343,7 +343,7 @@ GEM
     treetop (1.4.12)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.35)
+    tzinfo (0.3.61)
     uglifier (1.1.0)
       execjs (>= 0.3.0)
       multi_json (>= 1.0.2)