diff --git a/yarn.lock b/yarn.lock
index 43b257a40..5a6a26606 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1585,9 +1585,9 @@ class-utils@^0.3.5:
     static-extend "^0.1.1"
 
 clean-css@^4.1.9:
-  version "4.2.1"
-  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.2.1.tgz#2d411ef76b8569b6d0c84068dabe85b0aa5e5c17"
-  integrity sha512-4ZxI6dy4lrY6FHzfiy1aEOXgu4LIsW2MhwG0VBKdcoGoH/XLFgaHSdLTGr4O8Be6A8r3MOphEiI8Gc1n0ecf3g==
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.2.2.tgz#8519abda724b3e759bc79d196369906925d81a3f"
+  integrity sha512-yKycArwReQXbOD/3pmsPmt6p7oUBww8MisDabL2pCUWkbVONvCJoBdCjgY4ZVQmKX5juz/JB9oDcP6XzGUpjwQ==
   dependencies:
     source-map "~0.6.0"