diff --git a/package.json b/package.json
index fe3719eb432..0bd75be67f7 100644
--- a/package.json
+++ b/package.json
@@ -91,7 +91,7 @@
     "@types/styled-jsx": "^3.4.4",
     "cheerio": "^1.0.0",
     "markdownlint-rule-helpers": "^0.29.0",
-    "postcss": "^8.5.6",
+    "postcss": "^8.5.8",
     "rsync": "^0.6.1",
     "tailwindcss": "^4.1.18",
     "typescript": "^5.8.3"
diff --git a/yarn.lock b/yarn.lock
index 57654a52183..54f1d5cae8a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -11757,10 +11757,10 @@ postcss@8.4.49:
     picocolors "^1.1.1"
     source-map-js "^1.2.1"
 
-postcss@^8.4.21, postcss@^8.4.24, postcss@^8.4.26, postcss@^8.4.33, postcss@^8.4.38, postcss@^8.4.41, postcss@^8.5.6:
-  version "8.5.6"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.6.tgz#2825006615a619b4f62a9e7426cc120b349a8f3c"
-  integrity sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==
+postcss@^8.4.21, postcss@^8.4.24, postcss@^8.4.26, postcss@^8.4.33, postcss@^8.4.38, postcss@^8.4.41, postcss@^8.5.8:
+  version "8.5.8"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.8.tgz#6230ecc8fb02e7a0f6982e53990937857e13f399"
+  integrity sha512-OW/rX8O/jXnm82Ey1k44pObPtdblfiuWnrd8X7GJ7emImCOstunGbXUpp7HdBrFQX6rJzn3sPT397Wp5aCwCHg==
   dependencies:
     nanoid "^3.3.11"
     picocolors "^1.1.1"