diff --git a/package.json b/package.json
index 7c7987f5..ffdfadf6 100644
--- a/package.json
+++ b/package.json
@@ -69,7 +69,7 @@
     "jest-environment-jsdom": "^29.5.0",
     "mockzilla": "^0.13.0",
     "mockzilla-webextension": "^0.14.0",
-    "postcss": "^8.4.21",
+    "postcss": "^8.4.30",
     "postcss-loader": "^7.3.3",
     "prettier": "^2.8.8",
     "prettier-webpack-plugin": "^1.2.0",
diff --git a/yarn.lock b/yarn.lock
index c862050f..6d1ec23f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5817,10 +5817,10 @@ 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@^8.4.21, postcss@^8.4.23:
-  version "8.4.24"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.24.tgz#f714dba9b2284be3cc07dbd2fc57ee4dc972d2df"
-  integrity sha512-M0RzbcI0sO/XJNucsGjvWU9ERWxb/ytp1w6dKtxTKgixdtQDq4rmx/g8W1hnaheq9jgwL/oyEdH5Bc4WwJKMqg==
+postcss@^8.4.21, postcss@^8.4.23, postcss@^8.4.30:
+  version "8.4.30"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.30.tgz#0e0648d551a606ef2192a26da4cabafcc09c1aa7"
+  integrity sha512-7ZEao1g4kd68l97aWG/etQKPKq07us0ieSZ2TnFDk11i0ZfDW2AwKHYU8qv4MZKqN2fdBfg+7q0ES06UA73C1g==
   dependencies:
     nanoid "^3.3.6"
     picocolors "^1.0.0"