diff --git a/package.json b/package.json
index e82d4ee42dfa7..f34c6c5f37691 100644
--- a/package.json
+++ b/package.json
@@ -74,7 +74,7 @@
   "devDependencies": {
     "@babel/core": "^7.29.0",
     "@babel/preset-env": "^7.29.0",
-    "@double-great/stylelint-a11y": "^3.4.3",
+    "@double-great/stylelint-a11y": "^3.4.5",
     "@eslint/js": "^9.39.2",
     "@intlify/eslint-plugin-vue-i18n": "^4.1.1",
     "@stylistic/eslint-plugin": "^5.9.0",
@@ -101,7 +101,7 @@
     "lefthook": "^2.1.1",
     "mini-css-extract-plugin": "^2.10.0",
     "npm-run-all2": "^8.0.4",
-    "postcss": "^8.5.6",
+    "postcss": "^8.5.8",
     "postcss-scss": "^4.0.9",
     "sass": "^1.97.3",
     "sass-loader": "^16.0.7",
diff --git a/yarn.lock b/yarn.lock
index c3c94c4ae24cd..23d0a93076381 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -906,10 +906,10 @@
   resolved "https://registry.yarnpkg.com/@discoveryjs/json-ext/-/json-ext-0.6.3.tgz#f13c7c205915eb91ae54c557f5e92bddd8be0e83"
   integrity sha512-4B4OijXeVNOPZlYA2oEwWOTkzyltLao+xbotHQeqN++Rv27Y6s818+n2Qkp8q+Fxhn0t/5lA5X1Mxktud8eayQ==
 
-"@double-great/stylelint-a11y@^3.4.3":
-  version "3.4.3"
-  resolved "https://registry.yarnpkg.com/@double-great/stylelint-a11y/-/stylelint-a11y-3.4.3.tgz#aec415db35b72e863d1b22d85b4a3dc191f27752"
-  integrity sha512-AhAMyxl/w/wQvKdY1jdWDkF8BEgt6DKEZNGNyecJnKzY/MEq9iA1o63qwPtPTPHFN1jQjp5Vnq0fySxlfFw3fA==
+"@double-great/stylelint-a11y@^3.4.5":
+  version "3.4.5"
+  resolved "https://registry.yarnpkg.com/@double-great/stylelint-a11y/-/stylelint-a11y-3.4.5.tgz#15836e923f023d291f816383771b37972c64fafe"
+  integrity sha512-oivVlVs0QGKnge4PokkMRsML1O2Ps11UvW7ykpsXQBUm4gfvrcgTAfhXnTbjHehnjRQ4vWKkWijarixjblbtJg==
   dependencies:
     postcss "^8.5.6"
 
@@ -6786,10 +6786,10 @@ postcss-value-parser@^4.1.0, postcss-value-parser@^4.2.0:
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz#723c09920836ba6d3e5af019f92bc0971c02e514"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@^8.4.40, 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@^8.4.40, postcss@^8.5.6, 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"