diff --git a/Gemfile.lock b/Gemfile.lock
index d74af7f..792dfa1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -76,7 +76,7 @@ GEM
     treetop (1.4.10)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.33)
+    tzinfo (0.3.61)
     validation_reflection (1.0.0)
     will_paginate (3.0.3)