diff --git a/yarn.lock b/yarn.lock
index bd6a2a4..8eef46d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1097,8 +1097,8 @@ acorn-jsx@^5.0.0:
   resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-5.0.1.tgz#32a064fd925429216a09b141102bfdd185fae40e"
 
 acorn@^5.0.0, acorn@^5.3.0:
-  version "5.4.1"
-  resolved "http://registry.npm.taobao.org/acorn/download/acorn-5.4.1.tgz#fdc58d9d17f4a4e98d102ded826a9b9759125102"
+  version "5.7.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
 
 acorn@^6.0.2:
   version "6.0.7"