diff --git a/examples/yarn.lock b/examples/yarn.lock
index c918fde..0ab8c0e 100644
--- a/examples/yarn.lock
+++ b/examples/yarn.lock
@@ -1391,8 +1391,8 @@ async-limiter@~1.0.0:
   resolved "https://registry.npm.taobao.org/async-limiter/download/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
 
 async@^2.1.4, async@^2.4.0:
-  version "2.6.3"
-  resolved "https://registry.npm.taobao.org/async/download/async-2.6.3.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fasync%2Fdownload%2Fasync-2.6.3.tgz#d72625e2344a3656e3a3ad4fa749fa83299d82ff"
+  version "2.6.4"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.6.4.tgz#706b7ff6084664cd7eae713f6f965433b5504221"
   dependencies:
     lodash "^4.17.14"
 
@@ -4280,8 +4280,8 @@ lodash.throttle@^4.1.1:
   resolved "https://registry.npm.taobao.org/lodash.throttle/download/lodash.throttle-4.1.1.tgz#c23e91b710242ac70c37f1e1cda9274cc39bf2f4"
 
 lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.12, lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.0, lodash@^4.2.1, lodash@^4.3.0, lodash@^4.6.1:
-  version "4.17.15"
-  resolved "https://registry.npm.taobao.org/lodash/download/lodash-4.17.15.tgz?cache=0&sync_timestamp=1563508077056&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Flodash%2Fdownload%2Flodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1, loose-envify@^1.4.0:
   version "1.4.0"