diff --git a/Gemfile.lock b/Gemfile.lock
index c63aaf8..6238a5d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -88,6 +88,7 @@ GEM
     mime-types (1.25.1)
     minitest (5.4.2)
     multi_json (1.10.1)
+    mysql2 (0.3.16)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
     net-sftp (2.1.2)
@@ -184,6 +185,7 @@ DEPENDENCIES
   jbuilder (~> 2.0)
   jquery-rails
   kaminari-bootstrap
+  mysql2
   net-ssh (~> 2.7.0)
   rails (= 4.1.4)
   rmagick