diff --git a/Gemfile.lock b/Gemfile.lock
index 71293ae..c960c98 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -92,7 +92,7 @@ GEM
     thor (0.14.6)
     treetop (1.4.9)
       polyglot (>= 0.3.1)
-    tzinfo (0.3.28)
+    tzinfo (0.3.61)
     webrat (0.7.3)
       nokogiri (>= 1.2.0)
       rack (>= 1.0)