diff --git a/repository/boxnet/db/upgrade.php b/repository/boxnet/db/upgrade.php
new file mode 100644
index 00000000000..39fdb17608f
--- /dev/null
+++ b/repository/boxnet/db/upgrade.php
@@ -0,0 +1,69 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Upgrade.
+ *
+ * @package    repository_boxnet
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Upgrade function.
+ *
+ * @param int $oldversion the version we are upgrading from.
+ * @return bool result
+ */
+function xmldb_repository_boxnet_upgrade($oldversion) {
+    global $CFG, $DB;
+
+    $dbman = $DB->get_manager();
+
+    if ($oldversion < 2013110503) {
+        // Delete old user preferences containing auth tokens.
+        $DB->delete_records('user_preferences', array('name' => 'boxnet__auth_token'));
+        upgrade_plugin_savepoint(true, 2013110503, 'repository', 'boxnet');
+    }
+
+    if ($oldversion < 2013110504) {
+        require_once($CFG->dirroot . '/repository/lib.php');
+        require_once($CFG->dirroot . '/repository/boxnet/db/upgradelib.php');
+
+        $params = array();
+        $params['context'] = array();
+        $params['onlyvisible'] = false;
+        $params['type'] = 'boxnet';
+        $instances = repository::get_instances($params);
+
+        // Notify the admin about the migration process if they are using the repo.
+        if (!empty($instances)) {
+            repository_boxnet_admin_upgrade_notification();
+        }
+
+        // Hide the repository.
+        $repositorytype = repository::get_type_by_typename('boxnet');
+        if (!empty($repositorytype)) {
+            $repositorytype->update_visibility(false);
+        }
+
+        upgrade_plugin_savepoint(true, 2013110504, 'repository', 'boxnet');
+    }
+
+    return true;
+}
diff --git a/repository/boxnet/db/upgradelib.php b/repository/boxnet/db/upgradelib.php
new file mode 100644
index 00000000000..c0cf9de80d6
--- /dev/null
+++ b/repository/boxnet/db/upgradelib.php
@@ -0,0 +1,55 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Locallib.
+ *
+ * @package    repository_boxnet
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Send a message to the admin in regard with the APIv1 migration.
+ *
+ * @return void
+ */
+function repository_boxnet_admin_upgrade_notification() {
+    $admins = get_admins();
+
+    if (empty($admins)) {
+        return;
+    }
+    $a = new stdClass();
+    $a->docsurl = get_docs_url('Box.net_APIv1_migration');
+
+    foreach ($admins as $admin) {
+        $message = new stdClass();
+        $message->component         = 'moodle';
+        $message->name              = 'notices';
+        $message->userfrom          = get_admin();
+        $message->userto            = $admin;
+        $message->smallmessage      = get_string('apiv1migration_message_small', 'repository_boxnet');
+        $message->subject           = get_string('apiv1migration_message_subject', 'repository_boxnet');
+        $message->fullmessage       = get_string('apiv1migration_message_content', 'repository_boxnet', $a);
+        $message->fullmessagehtml   = get_string('apiv1migration_message_content', 'repository_boxnet', $a);
+        $message->fullmessageformat = FORMAT_PLAIN;
+        $message->notification      = 1;
+        message_send($message);
+    }
+}
diff --git a/repository/boxnet/lang/en/repository_boxnet.php b/repository/boxnet/lang/en/repository_boxnet.php
index a2a447644ad..84c65929ec1 100644
--- a/repository/boxnet/lang/en/repository_boxnet.php
+++ b/repository/boxnet/lang/en/repository_boxnet.php
@@ -24,6 +24,9 @@
  */
 
 $string['apikey'] = 'API key';
+$string['apiv1migration_message_content'] = 'As part of the recent Moodle upgrade (2.6, 2.5.3, 2.4.7), the Box.net repository plugin has been disabled. To re-enable it, you need to re-configure it as described in the documentation {$a->docsurl}.';
+$string['apiv1migration_message_small'] = 'This plugin has been disabled, as it requires configuration as described in the documentation Box.net APIv1 migration.';
+$string['apiv1migration_message_subject'] = 'Important information regarding Box.net repository plugin';
 $string['boxnet:view'] = 'View box.net repository';
 $string['cannotcreatereference'] = 'Cannot create a reference, not enough permissions to share the file on Box.net.';
 $string['clientid'] = 'Client ID';
diff --git a/repository/boxnet/version.php b/repository/boxnet/version.php
index ec971839672..a32ea60af2b 100644
--- a/repository/boxnet/version.php
+++ b/repository/boxnet/version.php
@@ -26,6 +26,6 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2013110500;        // The current plugin version (Date: YYYYMMDDXX)
+$plugin->version   = 2013110504;        // The current plugin version (Date: YYYYMMDDXX)
 $plugin->requires  = 2013110500;        // Requires this Moodle version
 $plugin->component = 'repository_boxnet'; // Full name of the plugin (used for diagnostics)