diff --git a/yarn.lock b/yarn.lock
index 92bb5f8..c11112e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -962,8 +962,8 @@ classlist.js@^1.1.20150312:
   resolved "http://registry.npm.taobao.org/classlist.js/download/classlist.js-1.1.20150312.tgz#1d70842f7022f08d9ac086ce69e5b250f2c57789"
 
 clean-css@4.1.x:
-  version "4.1.9"
-  resolved "http://registry.npm.taobao.org/clean-css/download/clean-css-4.1.9.tgz#35cee8ae7687a49b98034f70de00c4edd3826301"
+  version "4.1.11"
+  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.1.11.tgz#2ecdf145aba38f54740f26cefd0ff3e03e125d6a"
   dependencies:
     source-map "0.5.x"