diff --git a/db/schema.rb b/db/schema.rb
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -9,7 +9,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 19) do
+ActiveRecord::Schema.define(:version => 20) do
 
   create_table "grader_processes", :force => true do |t|
     t.string   "host",       :limit => 20