diff --git a/blocks/html/db/upgrade.php b/blocks/html/db/upgrade.php
new file mode 100644
index 00000000000..c10e6f4881b
--- /dev/null
+++ b/blocks/html/db/upgrade.php
@@ -0,0 +1,62 @@
+<?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/>.
+
+/**
+ * This file keeps track of upgrades to the html block
+ *
+ * @since 2.0
+ * @package block_html
+ * @copyright 2010 Dongsheng Cai
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+/**
+ *
+ * @param int $oldversion
+ * @param object $block
+ */
+function xmldb_block_html_upgrade($oldversion) {
+    global $CFG, $DB;
+
+    $dbman = $DB->get_manager();
+
+    if ($oldversion < 2010071501) {
+        $params = array();
+        $sql = "SELECT * FROM {block_instances} b WHERE b.blockname = :blockname";
+        $params['blockname'] = 'html';
+        $rs = $DB->get_recordset_sql($sql, $params);
+        foreach ($rs as $record) {
+            $config = unserialize(base64_decode($record->configdata));
+            $config = new stdclass;
+            if (!empty($config) && is_object($config)) {
+                if (!empty($config->text) && is_array($config->text)) {
+                    $data = clone($config);
+                    $config->text = $data->text['text'];
+                    $config->format = $data->text['format'];
+                }
+                $record->configdata = base64_encode(serialize($config));
+                $DB->update_record('block_instances', $record);
+            }
+        }
+        $rs->close();
+
+        /// html block savepoint reached
+        upgrade_block_savepoint(true, 2010071501, 'html');
+    }
+
+    return true;
+}
diff --git a/blocks/html/version.php b/blocks/html/version.php
index c9abcfeb820..5a959bfac1a 100644
--- a/blocks/html/version.php
+++ b/blocks/html/version.php
@@ -15,4 +15,4 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-$plugin->version = 2007101509;
+$plugin->version = 2010071501;