diff --git a/Gemfile.lock b/Gemfile.lock
index de90b4a..912789c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -169,7 +169,6 @@ GEM
       rubyzip
     sendgrid (1.0.1)
       json
-      json
     sprockets (2.1.3)
       hike (~> 1.2)
       rack (~> 1.0)
@@ -182,7 +181,7 @@ GEM
     treetop (1.4.10)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.33)
+    tzinfo (0.3.61)
     uglifier (1.2.4)
       execjs (>= 0.3.0)
       multi_json (>= 1.0.2)