diff --git a/Gemfile.lock b/Gemfile.lock
index 74b69f9..a4be1c8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -72,7 +72,7 @@ GEM
     thor (0.14.6)
     treetop (1.4.9)
       polyglot (>= 0.3.1)
-    tzinfo (0.3.24)
+    tzinfo (0.3.61)
     warden (1.0.3)
       rack (>= 1.0.0)