diff --git a/Gemfile.lock b/Gemfile.lock
index 14a1302..17dbb5b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,7 +28,7 @@ GEM
     rspec-expectations (2.9.1)
       diff-lcs (~> 1.1.3)
     rspec-mocks (2.9.0)
-    tzinfo (0.3.33)
+    tzinfo (0.3.61)
 
 PLATFORMS
   ruby