diff --git a/Gemfile.lock b/Gemfile.lock
index 4a05904..4fc0566 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -149,7 +149,7 @@ GEM
     treetop (1.4.10)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.32)
+    tzinfo (0.3.61)
     warden (1.1.1)
       rack (>= 1.0)
     xpath (0.1.4)