diff --git a/yarn.lock b/yarn.lock
index ee0e3eb..fa725c0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -533,9 +533,9 @@ abbrev@1:
   integrity sha1-+PLIh60Qv2f2NPAFtph/7TF5qsg=
 
 acorn@^6.2.1:
-  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#3ed8422d6dec09e6121cc7a843ca86a330a86b51"
-  integrity sha1-PthCLW3sCeYSHMeoQ8qGozCoa1E=
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
+  integrity sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==
 
 agent-base@^4.3.0:
   version "4.3.0"