diff --git a/yarn.lock b/yarn.lock
index 88d597e..ca7f003 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -222,9 +222,9 @@ acorn-jsx@^5.0.0:
   integrity sha1-hLaOpEs3PE+GhgI6VR9hoht8Sk8=
 
 acorn@^7.0.0:
-  version "7.0.0"
-  resolved "https://registry.npm.taobao.org/acorn/download/acorn-7.0.0.tgz#26b8d1cd9a9b700350b71c0905546f64d1284e7a"
-  integrity sha1-JrjRzZqbcANQtxwJBVRvZNEoTno=
+  version "7.1.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.1.1.tgz#e35668de0b402f359de515c5482a1ab9f89a69bf"
+  integrity sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg==
 
 ajv@^6.10.0, ajv@^6.10.2, ajv@^6.5.5:
   version "6.10.2"