diff --git a/package-lock.json b/package-lock.json
index fb6cc8fb6..ab8af5c98 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -51,7 +51,7 @@
         "pngjs": "^7.0.0",
         "postcss": "^8.4.40",
         "postcss-dark-theme-class": "^1.3.0",
-        "postcss-dir-pseudo-class": "^8.0.1",
+        "postcss-dir-pseudo-class": "^9.0.0",
         "postcss-discard-comments": "^7.0.1",
         "postcss-nesting": "^12.1.5",
         "prettier": "^3.3.3",
@@ -10783,9 +10783,9 @@
       }
     },
     "node_modules/postcss-dir-pseudo-class": {
-      "version": "8.0.1",
-      "resolved": "https://registry.npmjs.org/postcss-dir-pseudo-class/-/postcss-dir-pseudo-class-8.0.1.tgz",
-      "integrity": "sha512-uULohfWBBVoFiZXgsQA24JV6FdKIidQ+ZqxOouhWwdE+qJlALbkS5ScB43ZTjPK+xUZZhlaO/NjfCt5h4IKUfw==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/postcss-dir-pseudo-class/-/postcss-dir-pseudo-class-9.0.0.tgz",
+      "integrity": "sha512-T59BG9lURiXmhcJMyKbyjNAK3KCyEQYEhaz9GAETHXfIy9XbGQeyz+H0zIwRJlrP4KKRPJolNYe3QjQPemMjBA==",
       "dev": true,
       "funding": [
         {
@@ -10797,11 +10797,12 @@
           "url": "https://opencollective.com/csstools"
         }
       ],
+      "license": "MIT-0",
       "dependencies": {
-        "postcss-selector-parser": "^6.0.13"
+        "postcss-selector-parser": "^6.1.0"
       },
       "engines": {
-        "node": "^14 || ^16 || >=18"
+        "node": ">=18"
       },
       "peerDependencies": {
         "postcss": "^8.4"
diff --git a/package.json b/package.json
index b3fbb2d1a..34818ee19 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "pngjs": "^7.0.0",
     "postcss": "^8.4.40",
     "postcss-dark-theme-class": "^1.3.0",
-    "postcss-dir-pseudo-class": "^8.0.1",
+    "postcss-dir-pseudo-class": "^9.0.0",
     "postcss-discard-comments": "^7.0.1",
     "postcss-nesting": "^12.1.5",
     "prettier": "^3.3.3",