diff --git a/README.md b/README.md
index 84a2536..9a06819 100644
--- a/README.md
+++ b/README.md
@@ -121,7 +121,7 @@ https://github.com/jxson/front-matter
 [npm-image]: https://img.shields.io/npm/v/mmp-build?style=flat-square
 [lic-image]: https://img.shields.io/npm/l/mmp-build?style=flat-square
 
-[size-image]: https://img.shields.io/github/languages/code-size/next-theme/mmp-build?style=flat-square
+[size-image]: https://img.shields.io/github/languages/code-size/stevenjoezhang/mmp-build?style=flat-square
 [dm-image]: https://img.shields.io/npm/dm/mmp-build?style=flat-square
 [dt-image]: https://img.shields.io/npm/dt/mmp-build?style=flat-square
 
diff --git a/lib/generator/marked.js b/lib/generator/marked.js
index e38c029..23b1b4f 100644
--- a/lib/generator/marked.js
+++ b/lib/generator/marked.js
@@ -3,7 +3,7 @@ const marked = require("marked");
 class Lexer extends marked.Lexer {
   constructor() {
     super(...arguments);
-    this.tokenizer.rules.inline.em = /^\*((?:\*\*|[^*])+?)\*(?!\*)/;
+    this.tokenizer.rules.inline.em.start = /^(?:(\*(?=[punctuation]))|\*)(?![*\s])/;
   }
 
   static lex(src, options) {
diff --git a/package.json b/package.json
index b62de86..6b45e58 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,6 @@
     "hexo-front-matter": "^2.0.0",
     "hexo-pangu": "^0.2.0",
     "highlight.js": "^10.0.0",
-    "marked": "^1.0.0"
+    "marked": "1.1.1"
   }
 }