diff --git a/Gemfile.lock b/Gemfile.lock
index 1618b26..d9ee247 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -76,7 +76,7 @@ GEM
     shoulda (2.11.3)
     slop (3.4.6)
     timecop (0.6.3)
-    tzinfo (0.3.38)
+    tzinfo (0.3.61)
     uuidtools (2.1.4)
     yard (0.6.8)