diff --git a/package.json b/package.json
index 414dbe342d..40f13de3ab 100644
--- a/package.json
+++ b/package.json
@@ -131,7 +131,7 @@
     "madge": "7.0.0",
     "npm-run-all2": "6.2.2",
     "playwright": "1.44.1",
-    "postcss": "8.4.39",
+    "postcss": "8.4.40",
     "prettier": "3.3.3",
     "react": "18.3.1",
     "react-dom": "18.3.1",
diff --git a/yarn.lock b/yarn.lock
index 81f3f35f28..b76051f2f8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8509,7 +8509,16 @@ postcss-values-parser@^6.0.2:
     is-url-superb "^4.0.0"
     quote-unquote "^1.0.0"
 
-postcss@8.4.39, postcss@^8.4.23, 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"
+    source-map-js "^1.2.0"
+
+postcss@^8.4.23, 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==