diff --git a/package.json b/package.json
index 894a66032e20..10ecf07e6c8b 100644
--- a/package.json
+++ b/package.json
@@ -208,7 +208,7 @@
     "mini-css-extract-plugin": "^2.7.6",
     "node-dev": "^8.0.0",
     "peggy": "^3.0.2",
-    "postcss": "^8.4.27",
+    "postcss": "^8.4.28",
     "postcss-flexbugs-fixes": "^5.0.2",
     "postcss-loader": "^7.3.3",
     "postcss-normalize": "^10.0.1",
diff --git a/yarn.lock b/yarn.lock
index c77b94a17dff..aa5e54474c86 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -12032,10 +12032,10 @@ postcss-value-parser@^4.0.0, postcss-value-parser@^4.1.0, postcss-value-parser@^
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz#723c09920836ba6d3e5af019f92bc0971c02e514"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@^8.2.14, postcss@^8.4.21, postcss@^8.4.23, postcss@^8.4.24, postcss@^8.4.25, postcss@^8.4.27:
-  version "8.4.27"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.27.tgz#234d7e4b72e34ba5a92c29636734349e0d9c3057"
-  integrity sha512-gY/ACJtJPSmUFPDCHtX78+01fHa64FaU4zaaWfuh1MhGJISufJAH4cun6k/8fwsHYeK4UQmENQK+tRLCFJE8JQ==
+postcss@^8.2.14, postcss@^8.4.21, postcss@^8.4.23, postcss@^8.4.24, postcss@^8.4.25, postcss@^8.4.28:
+  version "8.4.28"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.28.tgz#c6cc681ed00109072816e1557f889ef51cf950a5"
+  integrity sha512-Z7V5j0cq8oEKyejIKfpD8b4eBy9cwW2JWPk0+fB1HOAMsfHbnAXLLS+PfVWlzMSLQaWttKDt607I0XHmpE67Vw==
   dependencies:
     nanoid "^3.3.6"
     picocolors "^1.0.0"