diff --git a/yarn.lock b/yarn.lock
index 1e8aa42..01305e7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -645,8 +645,8 @@ acorn-walk@^6.0.1:
   resolved "http://registry.npm.taobao.org/acorn-walk/download/acorn-walk-6.1.1.tgz#d363b66f5fac5f018ff9c3a1e7b6f8e310cc3913"
 
 acorn@^5.5.3:
-  version "5.7.3"
-  resolved "http://registry.npm.taobao.org/acorn/download/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
+  version "5.7.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
 
 acorn@^6.0.1, acorn@^6.0.2:
   version "6.0.5"