diff --git a/Gemfile.lock b/Gemfile.lock
index 64ec3ba..06769e1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -31,7 +31,7 @@ GEM
     rspec-expectations (2.11.1)
       diff-lcs (~> 1.1.3)
     rspec-mocks (2.11.1)
-    tzinfo (0.3.33)
+    tzinfo (0.3.61)
 
 PLATFORMS
   ruby