diff --git a/yarn.lock b/yarn.lock
index ae469d1e5..862a91fc2 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 "4.2.2"
-  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.2.2.tgz#8519abda724b3e759bc79d196369906925d81a3f"
-  integrity sha512-yKycArwReQXbOD/3pmsPmt6p7oUBww8MisDabL2pCUWkbVONvCJoBdCjgY4ZVQmKX5juz/JB9oDcP6XzGUpjwQ==
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.2.3.tgz#507b5de7d97b48ee53d84adb0160ff6216380f78"
+  integrity sha512-VcMWDN54ZN/DS+g58HYL5/n4Zrqe8vHJpGA8KdgUXFU4fuP/aHNw8eld9SyEIyabIMJX/0RaY/fplOo5hYLSFA==
   dependencies:
     source-map "~0.6.0"