diff --git a/packages/renderer/package.json b/packages/renderer/package.json
index dac0ff904e2..9d7a1f2470d 100644
--- a/packages/renderer/package.json
+++ b/packages/renderer/package.json
@@ -34,7 +34,7 @@
     "micromark-extension-directive": "^3.0.1",
     "moment": "^2.30.1",
     "monaco-editor": "^0.50.0",
-    "postcss": "^8.4.39",
+    "postcss": "^8.4.40",
     "postcss-load-config": "^6.0.1",
     "svelte": "5.0.0-next.196",
     "svelte-check": "^3.8.4",
diff --git a/packages/ui/package.json b/packages/ui/package.json
index acf7fcfad77..959ce6db3af 100644
--- a/packages/ui/package.json
+++ b/packages/ui/package.json
@@ -146,7 +146,7 @@
     "autoprefixer": "^10.4.19",
     "eslint-plugin-svelte": "^2.43.0",
     "jsdom": "^24.1.1",
-    "postcss": "^8.4.39",
+    "postcss": "^8.4.40",
     "postcss-load-config": "^6.0.1",
     "svelte": "5.0.0-next.196",
     "svelte-check": "^3.8.4",
diff --git a/storybook/package.json b/storybook/package.json
index df81c1c8784..82493308be2 100644
--- a/storybook/package.json
+++ b/storybook/package.json
@@ -35,7 +35,7 @@
     "@typescript-eslint/eslint-plugin": "7.17.0",
     "autoprefixer": "^10.4.18",
     "eslint-plugin-svelte": "^2.43.0",
-    "postcss": "^8.4.39",
+    "postcss": "^8.4.40",
     "postcss-load-config": "^6.0.1",
     "react": "18.2.0",
     "react-dom": "18.3.1",
diff --git a/website/package.json b/website/package.json
index d23dbbc0417..960fed8ea68 100644
--- a/website/package.json
+++ b/website/package.json
@@ -47,7 +47,7 @@
     "autoprefixer": "^10.4.19",
     "markdownlint": "^0.34.0",
     "markdownlint-cli2": "^0.13.0",
-    "postcss": "^8.4.39",
+    "postcss": "^8.4.40",
     "tailwindcss": "^3.4.6",
     "typedoc": "^0.26.5",
     "typedoc-plugin-markdown": "^4.2.2",
diff --git a/yarn.lock b/yarn.lock
index 2ad464860e6..ff37df7ffa8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -16437,10 +16437,10 @@ postcss-zindex@^6.0.2:
   resolved "https://registry.yarnpkg.com/postcss-zindex/-/postcss-zindex-6.0.2.tgz#e498304b83a8b165755f53db40e2ea65a99b56e1"
   integrity sha512-5BxW9l1evPB/4ZIc+2GobEBoKC+h8gPGCMi+jxsYvd2x0mjq7wazk6DrP71pStqxE9Foxh5TVnonbWpFZzXaYg==
 
-postcss@^8.4.21, postcss@^8.4.23, postcss@^8.4.24, postcss@^8.4.26, postcss@^8.4.38, postcss@^8.4.39:
-  version "8.4.39"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.39.tgz#aa3c94998b61d3a9c259efa51db4b392e1bde0e3"
-  integrity sha512-0vzE+lAiG7hZl1/9I8yzKLx3aR9Xbof3fBHKunvMfOCYAtMhrsnccJY2iTURb9EZd5+pLuiNV9/c/GZJOHsgIw==
+postcss@^8.4.21, postcss@^8.4.23, postcss@^8.4.24, postcss@^8.4.26, postcss@^8.4.38, postcss@^8.4.39, postcss@^8.4.40:
+  version "8.4.40"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.40.tgz#eb81f2a4dd7668ed869a6db25999e02e9ad909d8"
+  integrity sha512-YF2kKIUzAofPMpfH6hOi2cGnv/HrUlfucspc7pDyvv7kGdqXrfj8SCl/t8owkEgKEuu8ZcRjSOxFxVLqwChZ2Q==
   dependencies:
     nanoid "^3.3.7"
     picocolors "^1.0.1"