diff --git a/yarn.lock b/yarn.lock
index b31fc2e..236357a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -843,8 +843,8 @@ acorn-walk@^6.1.1:
   resolved "https://registry.npm.taobao.org/acorn-walk/download/acorn-walk-6.1.1.tgz#d363b66f5fac5f018ff9c3a1e7b6f8e310cc3913"
 
 acorn@^6.0.5, acorn@^6.0.7:
-  version "6.1.1"
-  resolved "https://registry.npm.taobao.org/acorn/download/acorn-6.1.1.tgz#7d25ae05bb8ad1f9b699108e1094ecd7884adc1f"
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
 
 add-asset-html-webpack-plugin@^3.1.3:
   version "3.1.3"