diff --git a/db/migrate/20140526093613_add_userstamps_to_versions.rb b/db/migrate/20140526093613_add_userstamps_to_versions.rb
index c6a2d04..629e1d6 100644
--- a/db/migrate/20140526093613_add_userstamps_to_versions.rb
+++ b/db/migrate/20140526093613_add_userstamps_to_versions.rb
@@ -2,5 +2,7 @@ class AddUserstampsToVersions < ActiveRecord::Migration
   def change
     add_column :versions, :creator_id, :integer
     add_column :versions, :updator_id, :integer
+    add_index :versions, :creator_id
+    add_index :versions, :updator_id
   end
 end
diff --git a/db/schema.rb b/db/schema.rb
index bae4bfc..71bf421 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -181,6 +181,8 @@ ActiveRecord::Schema.define(version: 20140526093613) do
     t.integer  "updator_id"
   end
 
+  add_index "versions", ["creator_id"], name: "index_versions_on_creator_id", using: :btree
   add_index "versions", ["item_type", "item_id"], name: "index_versions_on_item_type_and_item_id", using: :btree
+  add_index "versions", ["updator_id"], name: "index_versions_on_updator_id", using: :btree
 
 end