diff --git a/VERSION b/VERSION
index 6da4de57dc..f8c5ba1a78 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-8.4.1
+9.0.beta
diff --git a/config/config.php b/config/config.php
index 880c2c8294..7ee4c27738 100644
--- a/config/config.php
+++ b/config/config.php
@@ -17,7 +17,7 @@ if(!function_exists('getWebRoot')){function getWebRoot(){}}
 
 /* Basic settings. */
 $config = new config();
-$config->version      = '8.4.1';             // The version of zentaopms. Don't change it.
+$config->version      = '9.0.beta';        // The version of zentaopms. Don't change it.
 $config->charset      = 'UTF-8';           // The charset of zentaopms.
 $config->cookieLife   = time() + 2592000;  // The cookie life time.
 $config->timezone     = 'Asia/Shanghai';   // The time zone setting, for more see http://www.php.net/manual/en/timezones.php
diff --git a/module/upgrade/lang/en.php b/module/upgrade/lang/en.php
index ba4cdf86b8..ad84259dfa 100644
--- a/module/upgrade/lang/en.php
+++ b/module/upgrade/lang/en.php
@@ -113,3 +113,4 @@ $lang->upgrade->fromVersions['8_2_6']     = '8.2.6';
 $lang->upgrade->fromVersions['8_3']       = '8.3';
 $lang->upgrade->fromVersions['8_3_1']     = '8.3.1';
 $lang->upgrade->fromVersions['8_4']       = '8.4';
+$lang->upgrade->fromVersions['8_4_1']     = '8.4.1';
diff --git a/module/upgrade/lang/zh-cn.php b/module/upgrade/lang/zh-cn.php
index 8e317e126a..e0f3f3bdee 100644
--- a/module/upgrade/lang/zh-cn.php
+++ b/module/upgrade/lang/zh-cn.php
@@ -113,3 +113,4 @@ $lang->upgrade->fromVersions['8_2_6']     = '8.2.6';
 $lang->upgrade->fromVersions['8_3']       = '8.3';
 $lang->upgrade->fromVersions['8_3_1']     = '8.3.1';
 $lang->upgrade->fromVersions['8_4']       = '8.4';
+$lang->upgrade->fromVersions['8_4_1']     = '8.4.1';
diff --git a/module/upgrade/model.php b/module/upgrade/model.php
index 9beebc9c61..c528e42ea8 100644
--- a/module/upgrade/model.php
+++ b/module/upgrade/model.php
@@ -159,6 +159,8 @@ class upgradeModel extends model
                 $this->renameMainLib();
                 $this->adjustPriv8_4();
             case '8_4':
+            case '8_4_1':
+                $this->execSQL($this->getUpgradeFile('8.4.1'));
         }
 
         $this->deletePatch();
@@ -244,6 +246,7 @@ class upgradeModel extends model
         case '8_3':
         case '8_3_1':     $confirmContent .= file_get_contents($this->getUpgradeFile('8.3.1'));
         case '8_4':
+        case '8_4_1':     $confirmContent .= file_get_contents($this->getUpgradeFile('8.4.1'));
         }
         return str_replace('zt_', $this->config->db->prefix, $confirmContent);
     }