diff --git a/yarn.lock b/yarn.lock
index 8da6666..d4c7c66 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -779,8 +779,8 @@ accepts@~1.3.4, accepts@~1.3.5, accepts@~1.3.7:
     negotiator "0.6.2"
 
 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"
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
 
 adjust-sourcemap-loader@^1.1.0:
   version "1.2.0"