diff --git a/Gemfile.lock b/Gemfile.lock
index f8dfc2c..f390470 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -40,7 +40,7 @@ GEM
     rspec-expectations (2.8.0)
       diff-lcs (~> 1.1.2)
     rspec-mocks (2.8.0)
-    tzinfo (0.3.32)
+    tzinfo (0.3.61)
     unicorn (4.2.0)
       kgio (~> 2.6)
       rack