diff --git a/package-lock.json b/package-lock.json
index a69690e..f106396 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -130,9 +130,9 @@
       }
     },
     "acorn": {
-      "version": "6.2.0",
-      "resolved": "https://registry.npm.taobao.org/acorn/download/acorn-6.2.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Facorn%2Fdownload%2Facorn-6.2.0.tgz",
-      "integrity": "sha1-Z/DaL8M51s+11vskT9RJ8zzYu+M="
+      "version": "6.4.2",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.2.tgz",
+      "integrity": "sha512-XtGIhXwF8YM8bJhGxG5kXgjkEuNGLTkoYqVE+KMR+aspr4KGYmKYg7yUe3KghyQ9yheNwLnjmzh/7+gfDBmHCQ=="
     },
     "acorn-jsx": {
       "version": "5.0.1",