diff --git a/Gemfile.lock b/Gemfile.lock
index d4e86c2..d1dda9c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,7 +44,7 @@ GEM
     rspec-expectations (2.10.0)
       diff-lcs (~> 1.1.3)
     rspec-mocks (2.10.1)
-    tzinfo (0.3.33)
+    tzinfo (0.3.61)
     unicode_utils (1.3.0)
 
 PLATFORMS