diff --git a/Gemfile.lock b/Gemfile.lock
index 911d4d1..80baf6b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -266,7 +266,7 @@ GEM
       polyglot
       polyglot (>= 0.3.1)
     ttfunk (1.0.3)
-    tzinfo (0.3.39)
+    tzinfo (0.3.61)
     uglifier (2.2.1)
       execjs (>= 0.3.0)
       multi_json (~> 1.0, >= 1.0.2)