diff --git a/packages/core/src/exit.js b/packages/core/src/exit.js
index ac2efb0f..af68ca02 100644
--- a/packages/core/src/exit.js
+++ b/packages/core/src/exit.js
@@ -1,14 +1,13 @@
-function upgradeModules(core) {
-    if (base.version && global.ScriptEngineVersion != core['dist-tags']['latest']) {
-        var Paths = Java.type('java.nio.file.Paths')
-        base.save(Paths.get(root, "upgrade"), core['dist-tags']['latest'])
-        console.info('@ccms/core found new version ' + core['dist-tags']['latest'] + ' will upgrade after reboot!')
-    }
-}
 function exit() {
     var http = require('@ccms/common/dist/http').default
+    function upgradeModules(core) {
+        if (base.version && global.ScriptEngineVersion != core['dist-tags']['latest']) {
+            var Paths = Java.type('java.nio.file.Paths')
+            base.save(Paths.get(root, "upgrade"), core['dist-tags']['latest'])
+            console.info('@ccms/core found new version ' + core['dist-tags']['latest'] + ' will upgrade after reboot!')
+        }
+    }
     upgradeModules(http.get('https://registry.npmmirror.com/@ccms/core'))
-
     console.debug('exit finish!')
 }
 exit()
diff --git a/packages/core/src/initialize.js b/packages/core/src/initialize.js
index 8688e07e..ab825ee4 100644
--- a/packages/core/src/initialize.js
+++ b/packages/core/src/initialize.js
@@ -1,22 +1,34 @@
-var fs = require('@ccms/common/dist/fs')
-function updateJar() {
-    if (!base.version) {
-        var pluginFolder = fs.file(fs.concat(root, '..'))
-        var updateFolder = fs.concat(pluginFolder, 'update')
-    }
-}
-function upgradeModules(core) {
-    if (base.version && global.ScriptEngineVersion != core['dist-tags']['latest']) {
-        var Paths = Java.type('java.nio.file.Paths')
-        base.save(Paths.get(root, "upgrade"), core['dist-tags']['latest'])
-        console.info('@ccms/core found new version ' + core['dist-tags']['latest'] + ' will upgrade after reboot!')
-    }
-}
-function initialize() {
+global.initialize = function () {
     var mspmc = 'https://ms.yumc.pw/api/plugin/download/name/'
+    var artifact = 'https://ci.yumc.pw/job/Minecraft/job/MiaoScript/lastSuccessfulBuild/artifact'
 
+    var fs = require('@ccms/common/dist/fs')
     var http = require('@ccms/common/dist/http').default
 
+    function updateJar() {
+        var DocumentBuilderFactory = Java.type('javax.xml.parsers.DocumentBuilderFactory')
+        var URLDecoder = Java.type('java.net.URLDecoder')
+        var pom = DocumentBuilderFactory.newInstance().newDocumentBuilder()
+            .parse(artifact + "/pom.xml")
+        var latestVersion = pom.getElementsByTagName("version").item(0).getTextContent()
+        if (base.version != latestVersion) {
+            var pluginFolder = fs.file(fs.concat(root, '..'))
+            var updateFolder = fs.concat(pluginFolder, 'update')
+            fs.mkdirs(updateFolder)
+            var filePath = base.getInstance().class.classLoader.getURLs()[0]
+            var pluginFile = fs.file(URLDecoder.decode(filePath.getFile(), "UTF-8"))
+            var updateFile = fs.file(updateFolder, pluginFile.getName())
+            http.download(artifact + "/target/MiaoScript.jar", updateFile.getAbsolutePath())
+            console.info('MiaoScript found new version ' + latestVersion + ' will upgrade after reboot!')
+        }
+    }
+    function upgradeModules(core) {
+        if (base.version && global.ScriptEngineVersion != core['dist-tags']['latest']) {
+            var Paths = Java.type('java.nio.file.Paths')
+            base.save(Paths.get(root, "upgrade"), core['dist-tags']['latest'])
+            console.info('@ccms/core found new version ' + core['dist-tags']['latest'] + ' will upgrade after reboot!')
+        }
+    }
     var pluginFolder = fs.concat(root, 'plugins')
     var updateFolder = fs.concat(pluginFolder, 'update')
     var pluginFile = fs.concat(pluginFolder, 'MiaoScriptPackageManager.js')
@@ -43,9 +55,14 @@ function initialize() {
     try {
         Java.type("org.bukkit.Bukkit")
         updateJar()
-    } catch (ignore) {
+    } catch (error) {
+        console.debug(error)
+        if (global.debug) {
+            console.ex(error)
+        }
     }
     upgradeModules(http.get('https://registry.npmmirror.com/@ccms/core'))
     console.debug('initialize finish!')
 }
-initialize()
+global.initialize()
+delete global.initialize