diff --git a/apps/admin-x-settings/package.json b/apps/admin-x-settings/package.json
index 019df9c78f..8ec705ae79 100644
--- a/apps/admin-x-settings/package.json
+++ b/apps/admin-x-settings/package.json
@@ -76,7 +76,7 @@
     "eslint-plugin-react-hooks": "4.6.0",
     "eslint-plugin-react-refresh": "0.4.3",
     "eslint-plugin-tailwindcss": "3.13.0",
-    "postcss": "8.4.27",
+    "postcss": "8.4.28",
     "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 f86078b9f0..c8dd59b511 100644
--- a/apps/comments-ui/package.json
+++ b/apps/comments-ui/package.json
@@ -71,7 +71,7 @@
     "eslint-plugin-react-refresh": "0.4.3",
     "eslint-plugin-tailwindcss": "3.13.0",
     "jsdom": "22.1.0",
-    "postcss": "8.4.27",
+    "postcss": "8.4.28",
     "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 ab26a90f14..7bc6e96bc2 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": "8.4.27",
+        "postcss": "8.4.28",
         "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 08876400ac..a455ffb4e7 100644
--- a/ghost/core/package.json
+++ b/ghost/core/package.json
@@ -246,7 +246,7 @@
     "monobundle": "TryGhost/monobundle#44fdf2c8e304e797a04858bfd7339b2a1fa47441",
     "nock": "13.3.1",
     "papaparse": "5.3.2",
-    "postcss": "8.4.27",
+    "postcss": "8.4.28",
     "postcss-cli": "10.1.0",
     "rewire": "6.0.0",
     "should": "13.2.3",
diff --git a/yarn.lock b/yarn.lock
index e2a313244c..5e95772faa 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -24901,10 +24901,10 @@ postcss-values-parser@^4.0.0:
     is-url-superb "^4.0.0"
     postcss "^7.0.5"
 
-postcss@8.4.27, 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@^8.4.24, postcss@^8.4.27, postcss@^8.4.4:
-  version "8.4.27"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.27.tgz#234d7e4b72e34ba5a92c29636734349e0d9c3057"
-  integrity sha512-gY/ACJtJPSmUFPDCHtX78+01fHa64FaU4zaaWfuh1MhGJISufJAH4cun6k/8fwsHYeK4UQmENQK+tRLCFJE8JQ==
+postcss@8.4.28, 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@^8.4.24, postcss@^8.4.27, postcss@^8.4.4:
+  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"