diff --git a/rn_demos/yarn.lock b/rn_demos/yarn.lock
index 114468e..d590d7b 100644
--- a/rn_demos/yarn.lock
+++ b/rn_demos/yarn.lock
@@ -1145,10 +1145,10 @@ async-limiter@~1.0.0:
   resolved "https://registry.npm.taobao.org/async-limiter/download/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
 
 async@^2.4.0:
-  version "2.6.2"
-  resolved "https://registry.npm.taobao.org/async/download/async-2.6.2.tgz#18330ea7e6e313887f5d2f2a904bac6fe4dd5381"
+  version "2.6.4"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.6.4.tgz#706b7ff6084664cd7eae713f6f965433b5504221"
   dependencies:
-    lodash "^4.17.11"
+    lodash "^4.17.14"
 
 asynckit@^0.4.0:
   version "0.4.0"
@@ -3428,9 +3428,9 @@ lodash.unescape@4.0.1:
   version "4.0.1"
   resolved "https://registry.npm.taobao.org/lodash.unescape/download/lodash.unescape-4.0.1.tgz#bf2249886ce514cda112fae9218cdc065211fc9c"
 
-lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.5, lodash@^4.3.0, lodash@^4.6.1:
-  version "4.17.11"
-  resolved "https://registry.npm.taobao.org/lodash/download/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
+lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.14, lodash@^4.17.5, lodash@^4.3.0, lodash@^4.6.1:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 log-symbols@^2.2.0:
   version "2.2.0"