diff --git a/package.json b/package.json
index dd9d9e999cb6..de02dcbb87f8 100644
--- a/package.json
+++ b/package.json
@@ -189,7 +189,7 @@
     "pidusage": "^2.0.17",
     "pnp-webpack-plugin": "1.6.4",
     "popper.js": "^1.14.1",
-    "postcss": "8.2.2",
+    "postcss": "8.2.3",
     "postcss-import": "14.0.0",
     "postcss-loader": "4.1.0",
     "prettier": "^2.0.0",
diff --git a/packages/angular_devkit/build_angular/package.json b/packages/angular_devkit/build_angular/package.json
index 76515ea5020d..2877f3c5efaa 100644
--- a/packages/angular_devkit/build_angular/package.json
+++ b/packages/angular_devkit/build_angular/package.json
@@ -47,7 +47,7 @@
     "ora": "5.2.0",
     "parse5-html-rewriting-stream": "6.0.1",
     "pnp-webpack-plugin": "1.6.4",
-    "postcss": "8.2.2",
+    "postcss": "8.2.3",
     "postcss-import": "14.0.0",
     "postcss-loader": "4.1.0",
     "raw-loader": "4.0.2",
diff --git a/yarn.lock b/yarn.lock
index f2b7616153fd..175212b2d424 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9627,7 +9627,16 @@ postcss@7.0.21:
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
-postcss@8.2.2, postcss@^8.1.4:
+postcss@8.2.3:
+  version "8.2.3"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.2.3.tgz#14ed1294850c99661761d9cb68863718eb75690d"
+  integrity sha512-tdmNCCmxJEsLZNj810qlj8QbvnUNKFL9A5doV+uHrGGK/YNKWEslrytnHDWr9M/GgGjfUFwXCRbxd/b6IoRBXQ==
+  dependencies:
+    colorette "^1.2.1"
+    nanoid "^3.1.20"
+    source-map "^0.6.1"
+
+postcss@^8.1.4:
   version "8.2.2"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.2.2.tgz#60613b62297005084fd21024a68637798864fe26"
   integrity sha512-HM1NDNWLgglJPQQMNwvLxgH2KcrKZklKLi/xXYIOaqQB57p/pDWEJNS83PVICYsn1Dg/9C26TiejNr422/ePaQ==