diff --git a/Gemfile.lock b/Gemfile.lock
index ff9bb1f..c56134d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,14 +27,12 @@ GEM
     hashdiff (0.3.2)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
-    json (2.0.3)
+    json (2.3.0)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
     lumberjack (1.0.10)
-    mail (2.6.4)
-      mime-types (>= 1.16, < 4)
     mechanize (2.7.5)
       domain_name (~> 0.5, >= 0.5.1)
       http-cookie (~> 1.0)
@@ -91,7 +89,6 @@ DEPENDENCIES
   guard
   guard-minitest
   json
-  mail
   mechanize
   minitest
   mongo