diff --git a/Gemfile.lock b/Gemfile.lock
index 1a407ee12..a031fdc83 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -123,7 +123,7 @@ GEM
     treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.41)
+    tzinfo (0.3.61)
     websocket (1.0.7)
     xpath (2.0.0)
       nokogiri (~> 1.3)