diff --git a/db/schema.rb b/db/schema.rb
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -48,6 +48,7 @@
     t.string   "options"
     t.integer  "target_id"
     t.boolean  "taken"
+    t.integer  "taken_grader_process_id"
     t.datetime "created_at"
     t.datetime "updated_at"
   end