diff --git a/yarn.lock b/yarn.lock
index 52d68dc..2f59796 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -404,8 +404,8 @@ circular-json@^0.3.1:
   resolved "https://registry.yarnpkg.com/circular-json/-/circular-json-0.3.3.tgz#815c99ea84f6809529d2f45791bdf82711352d66"
 
 clean-css@^4.1.2:
-  version "4.1.7"
-  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.1.7.tgz#b9aea4f85679889cf3eae8b40349ec4ebdfdd032"
+  version "4.1.11"
+  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.1.11.tgz#2ecdf145aba38f54740f26cefd0ff3e03e125d6a"
   dependencies:
     source-map "0.5.x"