diff --git a/package.json b/package.json
index 97eccc1..d302015 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "vuepress-plugin-demo-code",
-    "version": "0.4.1",
+    "version": "0.4.2",
     "description": "📝 Demo and code plugin for vuepress",
     "main": "src/index.js",
     "files": [
diff --git a/src/highlight.js b/src/highlight.js
index 9b77bfb..4f2032a 100644
--- a/src/highlight.js
+++ b/src/highlight.js
@@ -1,9 +1,10 @@
-// https://github.com/vuejs/vuepress/blob/master/packages/@vuepress/markdown/lib/highlight.js
-
 const prism = require('prismjs')
 const escapeHtml = require('escape-html')
 const loadLanguages = require('prismjs/components/index')
 
+// prevent Prism calling `highlightAll`
+prism.manual = true
+
 // loadLanguages(['markup', 'css', 'javascript'])
 
 function wrap (code, lang) {