diff --git a/package-lock.json b/package-lock.json
index e3552ac..7df46bd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -193,9 +193,9 @@
       "dev": true
     },
     "acorn": {
-      "version": "6.2.1",
-      "resolved": "https://registry.npm.taobao.org/acorn/download/acorn-6.2.1.tgz?cache=0&sync_timestamp=1563633123962&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Facorn%2Fdownload%2Facorn-6.2.1.tgz",
-      "integrity": "sha1-PthCLW3sCeYSHMeoQ8qGozCoa1E=",
+      "version": "6.4.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+      "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
       "dev": true
     },
     "ajv": {