diff --git a/app/Gemfile.lock b/app/Gemfile.lock
index 01da8b2..4fbc037 100644
--- a/app/Gemfile.lock
+++ b/app/Gemfile.lock
@@ -66,7 +66,7 @@ GEM
     coffee-script-source (1.12.2)
     concurrent-ruby (1.0.5)
     erubi (1.6.1)
-    excon (0.57.1)
+    excon (0.71.0)
     execjs (2.7.0)
     faker (1.7.3)
       i18n (~> 0.5)
@@ -391,7 +391,6 @@ DEPENDENCIES
   spring-watcher-listen (= 2.0.1)
   therubyracer
   turbolinks (= 5.0.1)
-  tzinfo-data
   uglifier (= 3.2.0)
   web-console (= 3.5.1)
   will_paginate (= 3.1.5)