diff --git a/apps/admin-x-settings/package.json b/apps/admin-x-settings/package.json
index e2ca6a6e56..c5a67cf2e7 100644
--- a/apps/admin-x-settings/package.json
+++ b/apps/admin-x-settings/package.json
@@ -79,7 +79,7 @@
     "eslint-plugin-react-hooks": "4.6.0",
     "eslint-plugin-react-refresh": "0.4.3",
     "eslint-plugin-tailwindcss": "3.13.0",
-    "postcss": "8.4.29",
+    "postcss": "8.4.30",
     "postcss-import": "15.1.0",
     "prop-types": "15.8.1",
     "react-hot-toast": "2.4.1",
diff --git a/apps/comments-ui/package.json b/apps/comments-ui/package.json
index 21ccde2fe2..035d9a4d50 100644
--- a/apps/comments-ui/package.json
+++ b/apps/comments-ui/package.json
@@ -74,7 +74,7 @@
     "eslint-plugin-react-refresh": "0.4.3",
     "eslint-plugin-tailwindcss": "3.13.0",
     "jsdom": "22.1.0",
-    "postcss": "8.4.29",
+    "postcss": "8.4.30",
     "tailwindcss": "3.3.3",
     "vite": "4.4.9",
     "vite-plugin-css-injected-by-js": "3.3.0",
diff --git a/apps/signup-form/package.json b/apps/signup-form/package.json
index 8fe3555e53..73902e9af2 100644
--- a/apps/signup-form/package.json
+++ b/apps/signup-form/package.json
@@ -57,7 +57,7 @@
         "eslint-plugin-react-hooks": "4.6.0",
         "eslint-plugin-react-refresh": "0.4.3",
         "eslint-plugin-tailwindcss": "3.13.0",
-        "postcss": "8.4.29",
+        "postcss": "8.4.30",
         "postcss-import": "15.1.0",
         "prop-types": "15.8.1",
         "rollup-plugin-node-builtins": "2.1.2",
diff --git a/ghost/core/package.json b/ghost/core/package.json
index 61d6013633..a7b8fbee85 100644
--- a/ghost/core/package.json
+++ b/ghost/core/package.json
@@ -249,7 +249,7 @@
     "monobundle": "TryGhost/monobundle#44fdf2c8e304e797a04858bfd7339b2a1fa47441",
     "nock": "13.3.3",
     "papaparse": "5.3.2",
-    "postcss": "8.4.29",
+    "postcss": "8.4.30",
     "postcss-cli": "10.1.0",
     "rewire": "6.0.0",
     "should": "13.2.3",
diff --git a/yarn.lock b/yarn.lock
index 05f83fedf8..06f83d14b8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -26168,10 +26168,10 @@ postcss-values-parser@^4.0.0:
     is-url-superb "^4.0.0"
     postcss "^7.0.5"
 
-postcss@8.4.29, postcss@^8.1.4, postcss@^8.2.14, postcss@^8.2.15, postcss@^8.3.11, postcss@^8.4.19, postcss@^8.4.23, postcss@^8.4.27, postcss@^8.4.4:
-  version "8.4.29"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.29.tgz#33bc121cf3b3688d4ddef50be869b2a54185a1dd"
-  integrity sha512-cbI+jaqIeu/VGqXEarWkRCCffhjgXc0qjBtXpqJhTBohMUjUQnbBr0xqX3vEKudc4iviTewcJo5ajcec5+wdJw==
+postcss@8.4.30, postcss@^8.1.4, postcss@^8.2.14, postcss@^8.2.15, postcss@^8.3.11, postcss@^8.4.19, postcss@^8.4.23, postcss@^8.4.27, postcss@^8.4.4:
+  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"