diff --git a/yarn.lock b/yarn.lock
index df83ffb..24bca9f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -45,8 +45,8 @@
   resolved "https://registry.npm.taobao.org/@types/node/download/@types/node-12.7.2.tgz#c4e63af5e8823ce9cc3f0b34f7b998c2171f0c44"
 
 acorn@^6.2.1:
-  version "6.3.0"
-  resolved "https://registry.npm.taobao.org/acorn/download/acorn-6.3.0.tgz#0087509119ffa4fc0a0041d1e93a417e68cb856e"
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
 
 array-union@^2.1.0:
   version "2.1.0"